An artist's impression of the ancient Martian ocean. When two meteors slammed into Mars 3.4 billion years ago, they triggered massive, 400 ft. tsunamis that reshaped the coastline. Image: ESO/M. Kornmesser, via N. Risinger
About 3.4 billion years ago, (according to a new study) when the Late Heavy Bombardment had ended, and the first cells resembling prokaryotes were appearing on Earth, two enormous meteoroids slammed into the ancient, frigid ocean on Mars. These impacts generated massive 400 ft. high tsunamis that reshaped the shoreline of the Martian ocean, leaving behind fields of sediments and boulders.
It was long thought that ancient Mars had oceans. Sedimentary deposits discovered in the Martian north by radar in 2012 helped make the case for Martian oceans. 3.4 billion years ago, this ocean covered most of the Northern Martian lowlands. It’s thought that the ocean itself was fed by catastrophic flooding, perhaps fuelled by geothermal activity on Mars at the time.
These catastrophic tsunamis would have dwarfed most Earthly disasters. Waves 120 meters high would have swamped landmarks like the Statue of Liberty (93 m. high), and caused enormous destruction along the Martian coastline. If the research behind this new study stands up to scrutiny, then it will help prove the existence of the ancient Martian ocean.
The blue area in the above image is thought to be the location of a primordial ocean Mars. Image: NASA/JPL-Caltech/GSFC – Public Domain
The Martian surface shows the remains of an ancient ocean. In some areas, radar data shows a layer of water-borne sediment on top of a layer of volcanic rock. There’s also evidence of a shoreline, described by some scientists as being like a bathtub ring. The problems is, the shoreline can’t be seen everywhere it should be.
The tsunami hypothesis helps explain this missing shoreline.
According to the new study, led by Alexis Rodriguez, a Mars researcher at the Planetary Science Institute in Tucson Arizona, the tsunamis would have wiped away portions of the coastline, and left behind fields of sediment and boulders, and large backwash channels cut into the Martian surface.
The study is focussed on a specific region on Mars where a highland feature called Arabia Terra abuts the Chryse Planitia lowlands. This area was part of the shoreline of the Martian ocean. In that area, the team behind the study identified two separate geological formations that they say were created by two separate tsunami events.
The top image shows the shoreline of the ancient Martian shoreline at two separate times. The bottom images show debris left behind by the two tsunamis. Image: Alexis Rodriguez.
The first formation, and older of the two, looks every bit like a disturbed shoreline. An enormous wave washed over the beach, and in its wake deposited boulders over 10 meters across. Then, as the water drained back down into the ocean, it cut large backwash channels through its debris and boulder field.
A sequence of zoomed in images of the Martian surface in the study. (A) shows distances and elevations of backwash channels. (B) shows some of the channel-scoured, north-sloping highland mesas in blue. (C) shows the channelled surface, and (D) shows them in closer detail. Finally, (E) is zoomed in to show boulders as much as 10 m. in diameter. (Yellow bars are 10m.) Image: A,B:MOLA Science Team, MSS, JPL, NASA. C,D,E: NASA/JPL/University of Arizona
Then, some time passed. Millions of years, probably, until the second meteor hit, triggering another enormous tsunami. But this one behaved a little differently.
Conditions on Mars had changed by then, with temperatures dropping, and glaciers marching across the landscape, gouging out deep valleys on the surface of Mars. When the second tsunami hit the shore, its effect was different.
This time, the tsunami was more like an icy slurry, according to the team. Because of the cold temperatures, the icy water froze in place in some areas, before it could wash back into the ocean. The result? Deposits of frozen debris formed in dense lobes on the surface.
This long lobe of dark material on the surface of Mars was left behind when a tsunami of icy flush washed over the Martian coastline, freezing in place before it could wash back into the sea. Image: Alexis Rodriquez
But according to Rodriguez, this is just a snapshot of a process that likely occurred multiple times in the history of Mars. Successive meteors could have caused successive mega-tsunamis that would have repeatedly wiped away evidence of a shoreline. This could have happened as often as every 3 million years.
This study isn’t the knockout blow that proves the existence of a Martian ocean in ancient times. But it is certainly intriguing, and is a reasonable hypothesis that explains missing shorelines.
Rodriguez intends to keep looking for other evidence of tsunamis on the Martian surface. If he finds more, it will help make the case for the meteor-tsunami explanation.
Rodriguez will also be visiting places on Earth that are analogues for the Martian surface of ancient times. This summer he plans on visiting high-altitude, cold, alpine lakes in Tibet, where he hopes to learn something about the processes and geological formations involved.
Even better would be a mission to Mars, to sample the area where the tsunamis came ashore. A group of small craters near the shore that were drenched by the tsunamis is of particular interest to Rodriguez and his team. Martian ocean water could have been trapped there for millions of years. This site could provide evidence about the briny nature of the ancient ocean on Mars, and possibly tell us something about the evolution of life there.
An artist's illustration of SpaceX's Dragon capsule entering the Martian atmosphere. Image: SpaceX
A manned mission to Mars is a hot topic in space, and has been for a long time. Most of the talk around it has centred on the required technology, astronaut durability, and the overall feasibility of the mission. But now, some of the talk is focussing on the legal framework behind such a mission.
In April 2016, SpaceX announced their plans for a 2018 mission to Mars. Though astronauts will not be part of the mission, several key technologies will be demonstrated. SpaceX’s Dragon capsule will make the trip to Mars, and will conduct a powered, soft landing on the surface of the red planet. The capsule itself will be launched by another new piece of technology, SpaceX’s Falcon Heavy rocket.
It’s a fascinating development in space exploration; a private space company, in cooperation with NASA, making the trip to Mars with all of its own in-house technology. But above and beyond all of the technological challenges, there is the challenge of making the whole endeavour legal.
Though it’s not widely known or talked about, there are legal implications to launching things into space. In the US, each and every launch by a private company has to have clearance from the Federal Aviation Administration (FAA).
That’s because the US signed the Outer Space Treaty in 1969, a treaty that sets out the obligations and limitations to activities in space. The FAA has routinely given their ascent to commercial launches, but things may be starting to get a little tricky in space.
The most recent Humans To Mars Summit, a conference focussed on Mars missions and explorations, just wrapped up on May 19th. At that conference, George Nield, associate administrator for commercial space transportation at the FAA, addressed the issue. “That’ll be an FAA licensed launch as well,” said Nield of the SpaceX mission to Mars. “We’re already working with SpaceX on that mission,” he added. “There are some interesting policy questions that have to do with the Outer Space Treaty,” said Nield.
The Outer Space Treaty was signed in 1967, and has some sway over space exploration and colonization. Though it gives wide latitude to governments that are exploring space, how it will affect commercial activity like resource exploitation, and installations like settlements in other planets, is not so clear.
An artist’s illustration of a Mars settlement. If a private company like SpaceX were to build a colony on Mars, would other countries cry foul? Image: Bryan Versteeg/MarsOne
According to Nield, the FAA is interested in Article VI of the treaty and how it might impact SpaceX’s planned mission to Mars. Article VI states that all signees to the treaty “shall bear international responsibility for national activities in outer space, including the Moon and other celestial bodies, whether such activities are carried on by governmental agencies or by non-governmental entities.”
Article VI also says, “the activities of non-governmental entities in outer space, including the Moon and other celestial bodies, shall require authorization and continuing supervision by the appropriate State Party to the Treaty.”
What this language means is that the US government itself will bear responsibility for the SpaceX Mars mission. Obviously, this kind of treaty obligation is important. There isn’t exactly a huge list of private companies exploring space, but that will change as the years pass. It seems likely that the bulk of commercial space exploration and resource utilization will be centred in the US, so how the US deals with their treaty obligations will be of immense interest now and in the future.
The treaty itself is mostly focused on avoiding military activity in space. It prohibits things like weapons of mass destruction in space, and weapons testing or military bases on the Moon or other celestial bodies. The treaty also states that the Moon and other planets and bodies cannot be claimed by any nation, and that these and other bodies “are the common heritage of mankind.” Good to know.
Taken as a whole, it’s easy to see why the Treaty is important. Space can’t become a free-for-all like Earth has been in the past. There has to be some kind of framework. “A government needs to oversee these non-governmental activities,” according to Nield.
There’s another aspect to all of this. Governments routinely sign treaties, and then try to figure out ways around them, while hoping their rivals won’t do the same. It’s a sneaky, tactical business, because governments can’t grossly ignore treaties, else the other co-signatories abandon said treaty completely. A case in point is last year’s law, signed by the US Congress, which makes it legal for companies to mine asteroids. This law could be interpreted as violating the Treaty.
The US won the space race against its adversary, the USSR. The image of the American flag planted on the Moon, being saluted by an American astronaut, must have caused great consternation in the Kremlin. Will SpaceX’s mission to Mars cause the same consternation? Will Russia and other nations use the mission to remind the US of their Outer Space Treaty obligations? Image: NASA
Governments can claim, for instance, that their activities are scientific rather than military. Geo-political influence depends greatly on projecting power. If one nation can project power into space, while claiming their activities are scientific rather than military, they will gain an edge over their rivals. Countries also seek to bend the rules of a treaty to satisfy their own interests, while preventing other countries from doing the same. Just look at history.
We’re not in that type of territory yet. So far, no nation has had an opportunity to really violate the treaty, though the asteroid mining law passed by the US Congress comes close.
The SpaceX mission to Mars is a very important one, in terms of how the Outer Space Treaty will be tested and adhered to. More and more countries, and private companies, are becoming space-farers. The legality of increasingly complex missions in space, and the eventual human presence on the Moon and Mars, is a fascinating one not usually addressed by the space science community.
We in the space science community are primarily interested in technological advances, and in the frontiers of human knowledge. It might be time for us to start paying attention to the legal side of things. Space exploration could turn out to have an element of courtroom drama to it.
Mars snapped with the Hubble Space Telescope on May 12 just days before opposition. Credit: NASA/ESA
On May 12, the Hubble Space Telescope took this photo of Mars. Some prominent features of the planet are clearly visible: the ancient and inactive shield volcano Syrtis Major (far right and partly covered by clouds); the heavily eroded Arabia Terra in the center of the image; the dark features of Sinus Sabaeous and Sinus Meridiani below center and the small north polar cap (top).
We’re in store for an exciting weekend as the Earth and Mars get closer to each other than at any time in the last ten years. To take advantage of this special opportunity, the Hubble Space Telescope, normally busy eyeing remote galaxies, was pointed at our next door neighbor to capture this lovely close-up image.
Opposition occurs when Mars and Earth line up on the same side of the Sun. The two planets are closest together around that time. Mars opposition occurs on May 22, when the planet will shine at magnitude -2.0 and with an apparent diameter of 18.6 arc seconds, its largest in over 10 years. Credit: Bob King
As Universe Today writer David Dickinson described in his excellent Mars guide, the planet reaches opposition on Sunday morning May 22. That’s when the planet will be directly opposite the Sun in the sky and rise in the east around the same time the Sun sets in the west. Earth sits squarely in between. Opposition also marks the planet’s close approach to Earth, so that Mars appears bigger and brighter in the sky than usual. A perfect time for detailed studies whether through both amateur and professional telescopes.
Although opposition for most outer planets coincides with the date of closest approach, that’s not true in the case of Mars. If Mars is moving away from the Sun in its orbit when Earth laps it, closest approach occurs a few days before opposition. But if the planet is moving toward the Sun when our planet passes by, closest approach occurs a few days after opposition. This time around, Mars is headed sunward, so the date of closest approach of the two planets occurs on May 30.
It’s all goes back to Mars’ more eccentric orbit, which causes even a few days worth of its orbital travels to make a difference in the distance between the two planets when Earth is nearby. On May 22, Mars will be 47.4 million miles away vs. 46.77 million on the 30th, a difference of about 700,000 miles.
Every 26 months Mars reaches opposition. This mosaic of photos taken by Hubble show seven different oppositions since 1995. Because of Mars’ elliptical orbit, it shows variations in apparent size from opposition to opposition. Mars was the closest in 2003 when it came within 34.8 million miles (56 million kilometer) of Earth. The part of Mars that is tilted towards the Earth also shifts over time, resulting in the changing visibility of the polar caps. Clouds and dust storms, as well as the size of the ice caps, can change the appearance of Mars on time scales of days, weeks, and months. Other features of Mars, such as some of the large dark markings, have remained unchanged for centuries. Credit: NASA/ESA
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On May 12, Hubble took advantage of this favorable alignment and turned its gaze towards Mars to take an image of our rusty-hued neighbor, From this distance the telescope could see Martian features as small as 18.6 miles (30 kilometers) across. The image shows a sharp, natural-color view of Mars and reveals several prominent geological features, from smaller mountains and erosion channels to immense canyons and volcanoes.
Some of the more prominent features in the Hubble photo of Mars are marked here. Limb hazes are visible in modest-sized telescopes as a pale edging around the planet’s rim. The planet’s distinctive red color is created by rust. Billions of years ago, it’s thought that ultraviolet light from the Sun split water in the Martian atmosphere into hydrogen and oxygen. The hydrogen escaped, but the oxygen combined with iron in the planet’s surface rocks to form iron oxide or rust. Many of Earth’s red rock formations are similarly “oxidized.” Credit: NASA/ESA
The orange area in the center of the image is Arabia Terra, a vast upland region. The landscape is densely cratered and heavily eroded, indicating that it could be among the oldest features on the planet.
While the polar caps aren’t currently visible, telescope users will be treated to nice views of India-shaped Syrtis Major. The large crater Hellas at the top (south) limb is currently covered in winter clouds. Credit: Christopher Go
South of Arabia Terra, running east to west along the equator, is the long dark feature named Sinus Sabaeus that terminates in a larger, dark blob called and Sinus Meridiani. These darker regions are covered by bedrock from ancient lava flows and other volcanic features. An extended blanket of clouds can be seen over the southern polar cap where it’s late winter. The icy northern polar cap has receded to a comparatively small size because it’s now late summer in the northern hemisphere.
Mars on May 2 shows Syrtis Major off to the east (right). Crossing the top of the photo are Mare Tyrrhenum to the right of the planet’s central meridian and Mare Cimmerium, to the left. Credit: Christopher Go
So the question now is how much will you see as we pull up alongside the Red Planet this weekend? With the naked eye, Mars looks like a fiery “star” in the head of Scorpius the scorpion not far from the similarly-colored Antares, the brightest star in the constellation. It’s unmistakable. Even through the haze it caught my eye last night, rising in the southeast around 10 o’clock with its signature hue.
Through a 4-inch or larger telescope, you can see limb hazes/clouds and prominent dark features such as Syrtis Major, Utopia, clouds over Hellas, Mare Tyrrhenum (to the west of Syrtis Major) and Mare Cimmerium (west of M. Tyrrhenum).
Expert astroimager Damian Peach created this photographic map of Mars labeled with its most prominent features visible in amateur telescopes. Click for a large version. Credit: Damian Peach
These features observers across the America will see this week and early next between about 11 p.m. and 2 a.m. local time. As Mars rotation period is 37 minutes longer than Earth’s, these markings will gradually rotate out of view, and we’ll see the opposite hemisphere in the coming weeks. You can use the map to help you identify particular features or Sky & Telescope’s handy Mars Profilerto know which side of the planet’s visible when.
The Full Moon, Mars only hours before opposition, Saturn and Antares gather in the southern sky for a special, diamond-shaped grouping. Diagram: Bob King, source: Stellarium
To top off all the good stuff happening with Mars, the Full Flower Moon will join up with that planet, Saturn and Antares Saturday night May 21 to create what I like to call a “diamond of celestial lights” visible all night. Don’t miss it!
Italian astronomer Gianluca Masi will offer up two online Mars observing sessions in the coming week, on May 22 and 30, starting at 5 p.m. CDT (22:00 UT). Yet another opportunity to get acquainted with your inner Mars.
Artist rendering of Orbital ATK concept for an initial lunar habitat outpost, as it would appear with NASA’s Orion spacecraft in 2021. Credit: Orbital ATK
Artist rendering of Orbital ATK concept for an initial lunar habitat outpost, as it would appear with NASA’s Orion spacecraft in 2021. Credit: Orbital ATK
Orbital ATK has unveiled a practical new proposal to build a near term man-tended outpost in lunar orbit that could launch by 2020 and be operational in time for a lunar link-up with NASA’s Orion crew module during its maiden mission, when American astronauts finally return to the Moon’s vicinity in 2021 – thus advancing America’s next giant leap in human exploration of deep space.
The intrepid offer by Orbital could be carried out rather quickly because it utilizes an evolved version of the company’s already proven commercial Cygnus space station resupply freighter as “the building block … in cislunar space,” said Frank DeMauro, Orbital ATK Vice President for Human Spaceflight Systems, in an exclusive interview with Universe Today. See an artist concept in the lead image.
“Our Cygnus spacecraft is the building block to become a vehicle for exploration beyond low Earth orbit,” Orbital ATK’s Frank DeMauro told Universe Today.
“We are all about supporting NASA’s Mission to Mars. We feel that getting experience in cislunar space is critical to the buildup of the capabilities to go to Mars.”
NASA’s agency wide goal is to send astronauts on a ‘Journey to Mars’ in the 2030s – and expeditions to cislunar space in the 2020s serve as the vital ‘proving ground’ to fully develop, test out and validate the robustness of crucial technologies upon which the astronauts lives will depend on later Red Planet missions lasting some 2 to 3 years.
Orbital ATK’s lunar-orbit outpost proposal was announced at an official hearing of the US House of Representatives Subcommittee on Space on Wednesday, May 18, by former NASA Astronaut and Orbital ATK President of the Space Systems Group, Frank Culbertson.
“A lunar-orbit habitat will extend America’s leadership in space to the cislunar domain,” said Orbital ATK President of the Space Systems Group, Frank Culbertson.
“A robust program to build, launch and operate this initial outpost would be built on NASA’s and our international partners’ experience gained in long-duration human space flight on the International Space Station and would make use of the agency’s new Space Launch System (SLS) and Orion deep-space transportation system.”
The idea is to assemble an initial crew-tended habitat with pressurized work and living volume for the astronauts based on a Cygnus derived vehicle, and have it pre-positioned and functioning in lunar-orbit by 2020.
As envisioned by Orbital ATK, the habitat would be visited during NASA’s first manned mission of SLS and Orion to the Moon known as Exploration Mission-2 (EM-2).
The three week long EM-2 lunar test flight could launch as early as August 2021 – if sufficient funding is available.
The goals of EM-2 and following missions could be significantly broadened via docking with a lunar outpost. And Orion mission durations could be extended to 60 days.
NASA hopes to achieve a launch cadence for Orion/SLS of perhaps once per year.
Therefore autonomy and crew tended capability has to be built in to the lunar habitat right from the start – since crew visits would account for only a fraction of its time but enable vastly expanded science and exploration capabilities.
The initial lunar habitat envisioned by Orbital ATK would be comprised of two upgraded Cygnus pressurized vehicles – provisionally dubbed as Exploration Augmentation Modules (EAM). They would be attached to a multi-port docking module very similar in concept and design to the docking Nodes already flying in orbit as integral components of the ISS.
A Cygnus cargo spacecraft named the SS Rick Husband is being prepared inside the Payload Hazardous Servicing Facility at NASA’s Kennedy Space Center for upcoming Orbital ATK CRS-6/OA-6 mission to deliver hardware and supplies to the International Space Station. The Cygnus launched atop a United Launch Alliance Atlas V rocket on March 22, 2016. Credit: Ken Kremer/kenkremer.com
The lunar Cygnus vehicles would be upgraded from the enhanced cargo ships currently being manufactured and launched to the ISS.
“There are additional capabilities that we can put into the Cygnus module. We can make them longer and bigger so they can carry more logistics and carry more science,” DeMauro elaborated.
A variety of supplementary subsystems would also need to be enhanced.
“We looked at what systems we would need to modify to make it a long term habitation module. Since we would not be docked to the ISS, we would need our own Environmental Control and Life Support Systems (ECLSS) out at lunar orbit to support the crew.”
“The service module would also need to be improved due to the high radiation environment and the longer time.”
“We also need to look at the thermal protection subsystem, radiation protection subsystem and power subsystems to support the vehicle for many years as opposed to the short time spent at the ISS. More power is also needed to support more science. We also need a propulsion system to get to the Moon and maintain the vehicle.”
“All that work is getting looked at now – to determine what we need to modify and upgrade and how we would do all that work,” DaMauro told me.
The habitat components would be launched to the Moon on a commercial launch vehicle.
High on the list of candidate launchers would be the United Launch Alliance Atlas V rocket which recently already successfully delivered two Cygnus cargo ships to the ISS in Dec. 2015 and March 2016.
Other potential boosters include the ULA Delta IV and even ESA’s Ariane V as a way to potentially include international participation.
Inside the Payload Hazardous Servicing Facility at NASA’s Kennedy Space Center in Florida, a Cygnus cargo spacecraft is being prepared for the upcoming Orbital ATK Commercial Resupply Services-6 mission to deliver hardware and supplies to the International Space Station. The Cygnus was named SS Rick Husband in honor of the commander of the STS-107 mission. On that flight, the crew of the space shuttle Columbia was lost during re-entry on Feb. 1, 2003. The Cygnus launched atop a United Launch Alliance Atlas V rocket on March 22. Credit: Ken Kremer/kenkremer.com
The habitat components could be manufactured and launched about three years after getting a ‘Go Ahead’ contract from NASA.
Orbital ATK already has an established production line flowing to manufacture a steady stream of Cygnus cargo freighters to fulfill their NASA commercial resupply contract with NASA for the ISS – accumulating know how and cost reduction efficiencies.
“Since many aspects of operations in deep space are as yet untested, confidence must be developed through repeated flights to, and relatively long-duration missions in, cislunar space,” says Culbertson.
“Orbital ATK continues to operate our Cygnus cargo logistics vehicle as a flagship product, so we are ready to quickly and affordably implement an initial Cygnus-derived habitat in cislunar space within three years of a go-ahead.”
Over time, the outpost could be expanded with additional habitat and research modules delivered by Orion/SLS, commercial or international rockets. Perhaps even Bigelow expandable commercial modules could be added later.
Cygnus is suitable for wide ranging science experiments and gear. It could also launch cubesats – like the current Cygnus berthed at the ISS is equipped with a cubesat deployer.
Potential lunar landers developed by international partners could dock at the cislunar habitats open docking ports in between surface science forays.
“We are doing science now on Cygnus and we would expect to carry along science experiments on the new Cygnus vehicle. The vehicle is very attractive to science experiments,” DeMauro explained.
“There really is no limit to what the outpost could become.”
“What we put out is very exciting,” DeMauro noted.
“As a company we are looking forward to working in this arena. Our suggested plans are in line with where NASA wants to go. And we think we are the right company to play a big part in that!”
By incorporating commercial companies and leveraging the considerable technology development lessons learned from Cygnus, NASA should realize significant cost savings in implementing its human exploration strategy. Although Orbital ATK is not divulging a cost estimate for the lunar habitat at this time, the cost savings from a commercial partner should be considerable. And the 3 year time frame to launch is very attractive.
Orion is designed to send astronauts deeper into space than ever before, including missions to the Moon, asteroids and the Red Planet. Cygnus derived modules and/or other augmenting hardware components will be required to carry out any round trip human missions to the Martian surface.
NASA is now building the next Orion capsule at the Kennedy Space Center. It will launch unpiloted atop the first SLS rocket in late 2018 on the EM-1 mission.
Lockheed Martin engineers and technicians prepare the Orion pressure vessel for a series of tests inside the proof pressure cell in the Neil Armstrong Operations and Checkout Building at NASA’s Kennedy Space Center in Florida. Photo credit: NASA/Kim Shiflett
Stay tuned here for Ken’s continuing Earth and Planetary science and human spaceflight news.
Orion crew module pressure vessel for NASA’s Exploration Mission-1 (EM-1) is unveiled for the first time on Feb. 3, 2016 after arrival at the agency’s Kennedy Space Center (KSC) in Florida. It is secured for processing in a test stand called the birdcage in the high bay inside the Neil Armstrong Operations and Checkout (O&C) Building at KSC. Launch to the Moon is slated in 2018 atop the SLS rocket. Credit: Ken Kremer/kenkremer.com
SOFIA in flight, with its telescope exposed. Image: NASA/Jim Ross
Finding atomic oxygen in the Martian atmosphere is very difficult to do, which explains why it’s been 40 years since it was last detected. In the 1970’s, NASA’s Viking and Mariner missions detected Martian atmospheric oxygen, and now, the Stratospheric Observatory for Infrared Astronomy (SOFIA) has detected atomic oxygen in the upper portion of the Martian atmosphere called the mesosphere.
SOFIA is a specially modified Boeing 747 aircraft which carries a 100 inch telescope. It flies at altitudes between 37,000 to 45,000 feet, which puts it above most of the moisture in Earth’s atmosphere. This moisture would otherwise block the infrared radiation that SOFIA “sees.”
“Atomic oxygen in the Martian atmosphere is notoriously difficult to measure,” said Pamela Marcum, SOFIA project scientist. “To observe the far-infrared wavelengths needed to detect atomic oxygen, researchers must be above the majority of Earth’s atmosphere and use highly sensitive instruments, in this case a spectrometer. SOFIA provides both capabilities.”
A close-up of SOFIA’s telescope and primary mirror. Image: NASA/Tom Tschida
A special detector on board SOFIA, the German Receiver for Astronomy at Terahertz Frequencies (GREAT) allowed researchers to distinguish Martian atmospheric oxygen from Earthly oxygen. SOFIA-GREAT only detected half the amount of oxygen that scientists expected to find, which is probably due to changes and variations in the atmosphere. These results were published in a 2015 paper in Astronomy and Astrophysics.
Atomic oxygen has a strong effect on Mars’ atmosphere because it affects how other gases escape the atmosphere. It’s extreme volatility means it bonds with nearby molecules very easily; oxygen will combine with almost all chemical elements, except for the noble gases.
SOFIA is the largest airborne observatory in the world, and is a joint project between NASA and the German Aerospace Center. SOFIA has a 20 year mission timeline. Researchers will continue using SOFIA to study the Martian atmosphere, in order to better understand the variations in oxygen content.
SOFIA is not the only mission with eyes on Mars’ atmosphere. NASA’s Mars Atmosphere and Volatile EvolutioN (MAVEN) was launched in 2013 to explore the upper atmosphere of Mars, and how it’s affected by the solar wind. It’s thought that Mars’ atmosphere was much thicker in the past, and has been stripped away over time. Atomic oxygen played a role in Mars’ escaping atmosphere in the past, and no doubt will play a role in the future. SOFIA and other missions like MAVEN will hopefully shed some light on Mars’ past and future atmospheres.
These dark streaks, called recurring slope lineae (RSL), are on the sloped wall of a crater on Mars. A new study says they may have been formed by boiling water. Credit: NASA/JPL-Caltech/Univ. of Arizona
Finding water on Mars is a primary focus of human efforts to understand the Red Planet. The presence of liquid water on Mars supports the theory that life existed there. Now it looks as though some puzzling features on the surface of Mars could have been caused by boiling water.
Recurring slope lineae (RSL) are dark streaks found on slopes on the surface of Mars. It was thought that these streaks could have been caused by seasonal melting. Other proposed causes were dust avalanches or the venting of carbon dioxide gas. Since the same features are also found on the Moon, they could also be caused by tiny meteorites that cause avalanches. But now a study from researchers at the Open University of England shows that boiling water could have created the patterns.
We don’t have to go looking for thermal vents to find the source of this boiling water. The atmospheric pressure on Mars is so low that any liquid water would boil, without the need for a heat source. At about 1/100th the atmospheric pressure of Earth, Martian water will boil easily.
You don’t have to travel to Mars, or build an atmospheric pressure simulator, to observe the fact that water boils more readily under lower atmospheric pressure. You can see it happen here on Earth. As hikers and mountaineers know from experience, water boils more quickly the higher you go in the mountains. The greater your altitude, the less atmosphere there is pushing down on you, which lowers the boiling point of water. On Mars, that effect is extreme.
The team of researchers, led by M. Masse, performed their experiments in a chamber that can recreate the atmospheric pressure on Mars. Inside the chamber, they built a slope of loose, fine-grained material, and placed a block of ice on it. At first, the team kept the pressure inside the chamber identical to Earth’s atmospheric pressure, and the melting ice had little effect on the slope of loose material.
The ‘Martian Chamber’ used to re-create the atmospheric pressure on Mars. Image: M. Masse
But when they reduced the atmosphere inside the chamber to that of Mars, the water boiled quickly, creating a much more pronounced effect. This vigorous boiling action caused sand grains to fly into the air, creating heaps. As these heaps collapsed, avalanches were triggered. The end result was the same kind of flow patterns observed on Mars.
Numerous other studies have found evidence of liquid water on Mars, and features like the RSL appear to have been caused by water. But though this study seems to add to that growing evidence, it also puts the brakes on the idea that liquid water is present on Mars.
For these RSL to occur on Earth requires a certain amount of water. But because of the ‘boiling water effect’ of the lower pressure atmosphere on Mars, much less water is required to create them. Not only that, but the fact that water boils away so quickly means that any liquid water is short-lived, and would not provide an adequate environment for micro-organisms.
Experimental results from the new study show the effect that the atmospheres of Earth and Mars have on flowing water. Image: M. Masse
Also, the effect that Mars’ lower gravity has on the formation of RSLs is not well understood, and may be another part of the equation. The researchers’ ‘Martian Chamber’ was not built to mimic Mars’ gravity.
These are interesting preliminary results, flawed only by the lack of simulated Martian gravity. For these results to be conclusive, the same process would have to be observed on Mars itself. And that’s not happening anytime soon.
ESA Exomars rover launch has been rescheduled to launch two years later in 2020. Credit:ESA
ESA Exomars rover launch has been rescheduled to launch two years later in 2020. Credit:ESA
Liftoff of the ExoMars 2018 rover mission currently under development jointly by Europe and Russia has just been postponed for two years to 2020, according to an announcement today, May 2, from the European Space Agency (ESA) and the Russian space agency Roscosmos.
The delay was forced by a variety of technical and funding issues that ate up the schedule margin to enable a successful outcome for what will be Europe’s first Mars rover. The goal is to search for signs of life.
“Taking into account the delays in European and Russian industrial activities and deliveries of the scientific payload, a launch in 2020 would be the best solution,” ESA explained in a statement today.
The ambitious ExoMars rover is the second of two joint Euro-Russian missions to explore the Red Planet. It is equipped with an ESA deep driller and a NASA instrument to search for preserved organic molecules.
The first mission known as ExoMars 2016 was successfully launched last month from the Baikonur Cosmodrome in Kazakhstan atop a Russian Proton-M rocket on March 14.
The renamed ExoMars 2020 mission involves a European-led rover and a Russian-led surface platform and is also slated to blastoff on an Russian Proton rocket.
Roscosmos and ESA jointly decided to move the launch to the next available Mars launch window in July 2020. The costs associated with the delay are not known.
ExoMars 2016 lifted off on a Proton-M rocket from Baikonur, Kazakhstan at 09:31 GMT on 14 March 2016. Copyright ESA–Stephane Corvaja, 2016
The delay means that the Euro-Russian rover mission will launch the same year as NASA’s 2020 rover.
The rover is being built by prime contractor Airbus Defense and Space in Stevenage, England.
The descent module and surface science package are provided by Roscosmos with some contributions by ESA.
Recognizing the potential for a delay, ESA and Roscosmos set up a tiger team in late 2015 to assess the best options.
“Russian and European experts made their best efforts to meet the 2018 launch schedule for the mission, and in late 2015, a dedicated ESA-Roscosmos Tiger Team, also including Russian and European industries, initiated an analysis of all possible solutions to recover schedule delays and accommodate schedule contingencies,” said ESA in the statement.
The tiger team reported their results to ESA Director General Johann-Dietrich Woerner and Roscosmos Director General Igor Komarov.
Woerner and Komarov then “jointly decided to move the launch to the next available Mars launch window in July 2020, and tasked their project teams to develop, in cooperation with the industrial contactors, a new baseline schedule aiming towards a 2020 launch. Additional measures will also be taken to maintain close control over the activities on both sides up to launch.”
The ExoMars 2016 interplanetary mission is comprised of the Trace Gas Orbiter (TGO) and the Schiaparelli lander. The spacecraft are due to arrive at Mars in October 2016.
The ExoMars craft releases the Schiaparelli lander in October in this artist’s view. Credit: ESA
The goal of TGO is to search for possible signatures of life in the form of trace amounts of atmospheric methane on the Red Planet.
The main purpose of Schiaparelli is to demonstrate key entry, descent, and landing technologies for the follow on 2nd ExoMars mission that will land the first European rover on the Red Planet.
The now planned 2020 ExoMars mission will deliver an advanced rover to the Red Planet’s surface. It is equipped with the first ever deep driller that can collect samples to depths of 2 meters (seven feet) where the environment is shielded from the harsh conditions on the surface – namely the constant bombardment of cosmic radiation and the presence of strong oxidants like perchlorates that can destroy organic molecules.
ExoMars was originally a joint NASA/ESA project.
But thanks to hefty cuts to NASA’s budget by Washington DC politicians, NASA was forced to terminate the agencies involvement after several years of extremely detailed work and withdraw from participation as a full partner in the exciting ExoMars missions.
NASA is still providing the critical MOMA science instrument that will search for organic molecules.
Thereafter Russia agreed to take NASA’s place and provide the much needed funding and rockets for the pair of launches in March 2016 and May 2018.
TGO will also help search for safe landing sites for the ExoMars 2020 lander and serve as the all important data communication relay station sending signals and science from the rover and surface science platform back to Earth.
ExoMars 2016 is Europe’s most advanced mission to Mars and joins Europe’s still operating Mars Express Orbiter (MEX), which arrived back in 2004, as well as a fleet of NASA and Indian probes.
The Trace Gas Orbiter (TGO) and Schiaparelli lander arrive at Mars on October 19, 2016.
Stay tuned here for Ken’s continuing Earth and planetary science and human spaceflight news.
Curiosity rover reached out with robotic arm and drilled into ‘Lubango’ outcrop target on Sol 1320, Apr. 23, 2016, in this photo mosaic stitched from navcam camera raw images and colorized. Lubango is located in the Stimson unit on the lower slopes of Mount Sharp inside Gale Crater. MAHLI camera inset image shows drill hole up close on Sol 1321. Credit: NASA/JPL/MSSS/Ken Kremer/kenkremer.com/Marco Di Lorenzo
Curiosity rover reached out with robotic arm and drilled into ‘Lubango’ outcrop target on Sol 1320, Apr. 23, 2016, in this photo mosaic stitched from navcam camera raw images and colorized. Lubango is located in the Stimson unit on the lower slopes of Mount Sharp inside Gale Crater. MAHLI camera inset image shows drill hole up close on Sol 1321. Credit: NASA/JPL/MSSS/Ken Kremer/kenkremer.com/Marco Di Lorenzo
NASA’s CuriosityMars Science Laboratory (MSL) rover successfully bored a brand new hole in Mars at a tantalizing sandstone outcrop in the ‘Lubango’ fracture zone this past weekend on Sol 1320, Apr. 23, and is now carefully analyzing the shaken and sieved drill tailings for clues to Mars watery past atop the Naukluft Plateau.
“We have a new drill hole on Mars!” reported Ken Herkenhoff, Research Geologist at the USGS Astrogeology Science Center and an MSL science team member, in a mission update.
“All of the activities planned for last weekend have completed successfully.”
“Lubango” counts as the 10th drilling campaign since the one ton rover safely touched down on the Red Planet some 44 months ago inside the targeted Gale Crater landing site, following the nailbiting and never before used ‘sky crane’ maneuver.
After transferring the cored sample to the CHIMRA instrument for sieving it, a portion of the less than 0.15 mm filtered material was successfully delivered this week to the CheMin miniaturized chemistry lab situated in the rovers belly.
CheMin is now analyzing the sample and will return mineralogical data back to scientists on earth for interpretation.
The science team selected Lubango as the robots 10th drill target after determining that it was altered sandstone bedrock and had an unusually high silica content based on analyses carried out using the mast mounted ChemCam laser instrument.
Indeed the rover had already driven away for further scouting and the team then decided to return to Lubango after examining the ChemCam results. They determined the ChemCam and other data observation were encouraging enough – regarding how best to sample both altered and unaltered Stimson bedrock – to change course and drive backwards.
Lubango sits along a fracture in an area that the team dubs the Stimson formation, which is located on the lower slopes of humongous Mount Sharp inside Gale Crater.
This mid-afternoon, 360-degree panorama was acquired by the Mast Camera (Mastcam) on NASA’s Curiosity Mars rover on April 4, 2016, as part of long-term campaign to document the context and details of the geology and landforms along Curiosity’s traverse since landing in August 2012. Credit: NASA/JPL-Caltech/MSSS
Since early March, the rover has been traversing along a rugged region dubbed the Naukluft Plateau.
“The team decided to drill near this fracture to better understand both the altered and unaltered Stimson bedrock,” noted Herkenhoff.
See our photo mosaic above showing the geologically exciting terrain surrounding Curiosity with its outstretched 7-foot-long (2-meter-long) robotic arm after completing the Lubango drill campaign on Sol 1320. The mosaic was created by the imaging team of Ken Kremer and Marco Di Lorenzo.
Its again abundantly clear from the images that beneath the rusty veneer of the Red Planet lies a greyish interior preserving the secrets of Mars ancient climate history.
Curiosity rover views ‘Lubango’ drill target up close in this MAHLI camera image taken on Sol 1321, Apr. 24, 2016, processed to enhance details. Credit: NASA/JPL/MSSS/Marco Di Lorenzo/Ken Kremer/kenkremer.com
The team then commanded Curiosity to dump the unsieved portion of the sample onto the ground and examine the leftover drill tailing residues with the Mastcam, Navcam, MAHLI multispectral characterization cameras and the APXS spectrometer. ChemCam is also being used to fire laser shots in the wall of the drill hole to make additional chemical measurements.
To complement the data from Lubango, scientists are now looking around the area for a suitable target of unaltered Stimson bedrock as the 11th drill target.
“The color information provided by Mastcam is really helpful in distinguishing altered versus unaltered bedrock,” explained MSL science team member Lauren Edgar, Research Geologist at the USGS Astrogeology Science Center, in a mission update.
The ChemCam laser has already shot at the spot dubbed “Oshikati,” a potential target for the next drilling campaign.
“On Sunday we will drive to our next drilling location, which is on a nearby patch of normal-looking Stimson sandstone,” wrote Ryan Anderson, planetary scientist at the USGS Astrogeology Science Center and a member of the ChemCam team on MSL in today’s (Apr. 28) mission update.
As time permits, the Navcam imager is also being used to search for dust devils.
As I reported here, Opportunity recently detected a beautiful looking dust devil on the floor of Endeavour crater on April 1. Dust devil detections by the NASA rovers are relatively rare.
Curiosity has been driving to the edge of the Naukluft Plateau to reach the interesting fracture zone seen in orbital data gathered from NASA’s Mars orbiter spacecraft.
Curiosity images Naukluft Plateau in this photo mosaic stitched from Mastcam camera raw images taken on Sol1296. Credit: NASA/JPL/MSSS/Marco Di Lorenzo/Ken Kremer/kenkremer.com
The rover is almost finished crossing the Naukluft Plateau which is “the most rugged and difficult-to-navigate terrain encountered during the mission’s 44 months on Mars,” says NASA.
Curiosity explores Red Planet paradise at Namib Dune during Christmas 2015 – backdropped by Mount Sharp. Curiosity took first ever self-portrait with Mastcam color camera after arriving at the lee face of Namib Dune. This photo mosaic shows a portion of the full self portrait and is stitched from Mastcam color camera raw images taken on Sol 1197, Dec. 19, 2015. Credit: NASA/JPL/MSSS/Ken Kremer/kenkremer.com/Marco Di Lorenzo
As of today, Sol 1325, April 28, 2016, Curiosity has driven over 7.9 miles (12.7 kilometers) since its August 2012 landing, and taken over 320,100 amazing images.
Spectacular Mastcam camera view of Gale Crater rim from Curiosity on Sol 1302 enhanced to bring out detail. Credit: NASA/JPL/MSSS/Marco Di Lorenzo/Ken Kremer/kenkremer.com
Stay tuned here for Ken’s continuing Earth and planetary science and human spaceflight news.
Artists concept for sending SpaceX Red Dragon spacecraft to land propulsively on Mars as early as 2020. Credit: SpaceX
Artists concept for sending SpaceX Red Dragon spacecraft to land propulsively on Mars as early as 2018. Credit: SpaceX
SpaceX announced plans today, April 27, for the first ever private mission to Mars which involves sending an uncrewed version of the firms Dragon spacecraft to accomplish a propulsive soft landing – and to launch it as soon as 2018 including certain technical assistance from NASA.
Under a newly signed space act agreement with NASA, the agency will provide technical support to SpaceX with respect to Mars landing technologies for the new spacecraft known as a ‘Red Dragon’ and possibly also for science activities.
“SpaceX is planning to send Dragons to Mars as early as 2018,” the company posted in a brief announcement today on Facebook and other social media about the history making endeavor.
The 2018 commercial Mars mission involves launching the ‘Red Dragon’ – also known as Dragon 2 – on the SpaceX Falcon Heavy rocket from Launch Pad 39A at NASA’s Kennedy Space Center in Florida. It’s a prelude to eventual human missions.
The Red Dragon initiative is a commercial endeavor that’s privately funded by SpaceX and does not include any funding from NASA. The agreement with NASA specifically states there is “no-exchange-of-funds.”
As of today, the identity and scope of any potential science payload is undefined and yet to be determined.
Hopefully it will include a diverse suite of exciting research instruments from NASA, or other entities, such as high powered cameras and spectrometers characterizing the Martian surface, atmosphere and environment.
SpaceX CEO and billionaire founder Elon Musk has previously stated his space exploration goals involve helping to create a Mars colony which would ultimately lead to establishing a human ‘City on Mars.’
Musk is also moving full speed ahead with his goal of radically slashing the cost of access to space by recovering a pair of SpaceX Falcon 9 first stage boosters via successful upright propulsive landings on land and at sea – earlier this month and in Dec. 2015.
Artists concept for sending uncrewed SpaceX Red Dragon spacecraft to land propulsively on Mars as early as 2018. Credit: SpaceX
The 2018 liftoff campaign marks a significant step towards fulfilling Musk’s Red Planet vision. But we’ll have to wait another 5 months for concrete details.
“Red Dragon missions to Mars will also help inform the overall Mars colonization architecture that SpaceX will reveal later this year,” SpaceX noted.
Musk plans to reveal the details of the Mars colonization architecture later this year at the International Astronautical Congress (IAC) being held in Guadalajara, Mexico from September 26 to 30, 2016.
Landing on Mars is not easy. To date only NASA has successfully soft landed probes on Mars that returned significant volumes of useful science data.
In the meantime a few details about the SpaceX Red Dragon have emerged.
The main goal is to propulsively land something 5-10 times the size of anything previously landed before.
“These missions will help demonstrate the technologies needed to land large payloads propulsively on Mars,” SpaceX further posted.
NASA’s 1 ton Curiosityrover is the heaviest spaceship to touchdown on the Red Planet to date.
Artists concept for sending SpaceX Red Dragon spacecraft to Mars as early as 2018. Credit: SpaceX
As part of NASA’s agency wide goal to send American astronauts on a human ‘Journey to Mars’ in the 2030s, NASA will work with SpaceX on some aspects of the Red Dragon initiative to further the agency’s efforts.
According to an amended space act agreement signed yesterday jointly by NASA and SpaceX officials – that originally dates back to November 2014 – this mainly involves technical support from NASA and exchanging entry, descent and landing (EDL) technology, deep space communications, telemetry and navigation support, hardware advice, and interplanetary mission and planetary protection advice and consultation.
“We’re particularly excited about an upcoming SpaceX project that would build upon a current “no-exchange-of-funds” agreement we have with the company,” NASA Deputy Administrator Dava Newman wrote in a NASA blog post today.
“In exchange for Martian entry, descent, and landing data from SpaceX, NASA will offer technical support for the firm’s plan to attempt to land an uncrewed Dragon 2 spacecraft on Mars.”
“This collaboration could provide valuable entry, descent and landing data to NASA for our journey to Mars, while providing support to American industry,” NASA noted in a statement.
The amended agreement with NASA also makes mention of sharing “Mars Science Data.”
As of today, the identity, scope and weight of any potential science payload is undefined and yet to be determined.
Perhaps it could involve a suite of science instruments from NASA, or other entities, such as cameras and spectrometers characterizing various aspects of the Martian environment.
In the case of NASA, the joint agreement states that data collected with NASA assets is to be released within a period not to exceed 6 months and published where practical in scientific journals.
The Red Dragon envisioned for blastoff to the Red Planet as soon as 2018 would launch with no crew on board on a critical path finding test flight that would eventually pave the way for sending humans to Mars – and elsewhere in the solar system.
“Red Dragon Mars mission is the first test flight,” said Musk.
“Dragon 2 is designed to be able to land anywhere in the solar system.”
However, the Dragon 2 alone is far too small for a round trip mission to Mars – lasting some three years or more.
“Wouldn’t be fun for longer journeys. Internal volume ~size of SUV.”
Furthermore, for crewed missions it would also have to be supplemented with additional modules for habitation, propulsion, cargo, science, communications and more. Think ‘The Martian’ movie to get a realistic idea of the complexity and time involved.
Red Dragon’s blastoff from KSC pad 39A is slated to take place during the Mars launch window opening during April and May 2018.
The inaugural liftoff of the Falcon Heavy is currently scheduled for late 2016 after several years postponement.
If all goes well, Red Dragon could travel to Mars at roughly the same time as NASA’s next Mission to Mars – namely the InSight science lander, which will study the planets deep interior with a package of seismometer and heat flow instruments.
InSight’s launch on a United Launch Alliance Atlas V is targeting a launch window that begins May 5, 2018, with a Mars landing scheduled for Nov. 26, 2018. Liftoff was delayed from this year due to a flaw in the French-built seismometer.
SpaceX Red Dragon spacecraft launches to Mars on SpaceX Falcon Heavy as soon as 2018 in this artists comcept. Credit: SpaceX
Whoever wants to land on Mars also has to factor in the relevant International treaties regarding ‘Planetary Protection’ requirements.
Wherever the possibility for life exists, the worlds space agency’s who are treaty signatories, including NASA, are bound to adhere to protocols limiting contamination by life forms from Earth.
SpaceX intends to take planetary protection seriously. Under the joint agreement, SpaceX is working with relevant NASA officials to ensure proper planetary protection procedures are followed. One of the areas of collaboration with NASA is for them to advise SpaceX in the development a Planetary Protection Plan (PPP) and assist with the implementation of a PPP including identifying existing software/tools.
Red Dragon is derived from the SpaceX crew Dragon vehicle currently being developed under contract for NASA’s Commercial Crew Program (CCP) to transport American astronauts back and forth to low Earth orbit and the International Space Station (ISS).
SpaceX and Boeing were awarded commercial crew contracts from NASA back in September 2014.
Both firms hope to launch unmanned and manned test flights of their SpaceX Crew Dragon and Boeing CST-100 Starliner spacecraft to the ISS starting sometime in 2017.
The crew Dragon is also an advanced descendent of the original unmanned cargo Dragon that has ferried tons of science experiments and essential supplies to the ISS since 2012.
A SpaceX Falcon 9 rocket and Dragon cargo ship are set to liftoff on a resupply mission to the International Space Station (ISS) from launch pad 40 at Cape Canaveral, Florida on Jan. 6, 2015. File photo. Credit: Ken Kremer – kenkremer.com
To enable propulsive landings, SpaceX recently conducted hover tests using a Dragon 2 equipped with eight side-mounted SuperDraco engines at their development testing facility in McGregor, TX.
These are “Key for Mars landing,” SpaceX wrote.
“We are closer than ever before to sending American astronauts to Mars than anyone, anywhere, at any time has ever been,” Newman states.
SpaceX Dragon 2 crew vehicle, powered by eight SuperDraco engines, conducts propulsive hover test at the company’s rocket development facility in McGregor, Texas. Credit: SpaceX
Stay tuned here for Ken’s continuing Earth and planetary science and human spaceflight news.
On the left are original photos from NASA's Mars Reconnaissance Orbiter. On the right are sharper photos of the same, created by stacking matching photos on top of one another. Image: NASA/JPL-Caltech/Univ. of Arizona/Yu Tao et al/University College London.
We like to focus on successful space missions and celebrate what those successes add to our knowledge. But, obviously, not all missions are completely successful. And since some missions are at such huge distances from Earth, their fate can remain a mystery.
This was true of the Beagle 2 Lander, until recently.
The Beagle 2 was a UK contribution to the ESA’s Mars Express mission, launched in 2003. Mars Express consisted of two components; the Mars Express Orbiter and the Beagle 2 Lander. The mission arrived at Mars in December 2003, when the Beagle 2 separated from the orbiter and landed on the Martian surface.
Beagle 2’s destination was Isidis Planitia, a vast sedimentary basin. Beagle 2 was supposed to operate for 180 days, with a possible extension up to one Martian year. But the ESA was unable to contact the lander after several attempts, and in February 2004, the ESA declared the mission lost.
The Beagle 2, named after the ship that Darwin took on his famous voyage, had some solid science goals in mind. It was going to study the geology, mineralogy, and the geochemistry of the landing site, and also the physical properties of the atmosphere and Mars’ surface. It was also going to study the Martian meteorology and climate, and search for biosignatures. But all that was lost.
There was lots of conjecture, but the Beagle 2’s fate was a mystery.
Now, thanks to a new method of ‘stacking and matching’ photos of the Martian surface, which results in higher resolution images than previously possible, the likely fate of the Beagle 2 is known. It appears that the spacecraft landed softly as planned, but that solar panels failed to deploy properly. This not only starved the lander of electrical power, but blocked the craft’s antenna from functioning. This is why no signal was ever received from Beagle 2.
This is a zoomed in image of the Beagle 2 on Mars, with a to-scale sketch of the Beagle 2 super-imposed beside it. Credit: NASA/JPL-Caltech/Univ. of Arizona/Yu Tao et al/University College London/University of Leicester
It took quite a bit of sleuthing to find the Beagle 2. The MRO has used its High Resolution Imaging Science Experiment (HiRise) camera to search for other craft on the surface of Mars, but the Beagle 2 was harder to find. It never sent even a brief signal after touchdown, which would have made it much easier to locate.
Adding to the difficulty is the huge landing area the Beagle 2 had. Beagle 2’s landing site at the time of its launch was an ellipse 170 km by 100 km in the Isidis Planitia. That’s an enormous area in which to locate a spacecraft that’s less than a few meters across once deployed, with a camera that has an image scale of about 0.2m, (10 inches).
The MRO has been using its HiRise to look for Beagle 2 since it was lost. As it went about the business of its science objectives, it captured occasional images of the Beagle 2’s landing site. Eventually, the lander was identified by Michael Croon, a former member of the ESA’s Mars Express Orbiter team. In HiRise images from February 2013 and June 2014, Croon found visual evidence of the lander and its entry and descent components.
The puzzling thing was that the image seemed to shift around in different photos. This could be because the lander deployed its solar panels like flower petals arranged around the center. The panels will reflect light differently in different lighting conditions, which could make the lander appear to change location in subsequent photos. If Beagle 2 is sitting on an uneven surface, that could add to the illusion.
The HiRise images are consistent with the idea that the panels failed to deploy, and that also makes sense if the panels blocked the antenna from operating. It’s also possible that the sun glinting off the panels only makes it appear that not all of them opened.
A replica of the Beagle 2 lander at the London Science Museum. Image: By user:geni – Photo by user:geni, GFDL, https://commons.wikimedia.org/w/index.php?curid=5258554
But what’s bad news for Beagle 2 is good news for the human endeavour to study Mars. The new technique of combining images of the surface of Mars yields photos with 5 times the resolution that MRO can provide. This will make selecting landing sites for future missions much easier, and will also contribute to the science objectives of the MRO itself.
These two images show the power of the new high-resolution imaging technique. The top shows two original images, on the left a rock field, and on the right, an area containing tracks left by the Spirit rover. Image: Credit: NASA/JPL-Caltech/Univ. of Arizona/Yu Tao et al/University College London
The Mars Express Orbiter is still in operation above Mars, and has been for over 12 years. Among its achievements are the detection of water ice in Mars’ South Polar cap and the discovery of methane in the atmosphere of Mars. The orbiter also performed the closest-ever flyby of Mars’ moon Phobos.
