Earth Archives

December 21, 2011December 24, 2015 by Amy Shira Teitel

Earth’s Other Moons

Saturn's moons Rhea and Dione as seen by the Cassini spacecraft. Could this be a future view from Earth? Image credit: NASA/JPL/Space Science Institute

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In the fall of 2006, observers at the Catalina Sky Survey in Arizona found an object orbiting the Earth. At first, it looked like a spent rocket stage — it had a spectrum similar to the titanium white paint NASA uses on rocket stages that end up in heliocentric orbits. But closer inspection revealed that the object was a natural body. Called 2006 RH120, it was a tiny asteroid measuring just a few metres across but it still qualified as a natural satellite just like the Moon. By June 2007, it was gone. Less than a year after it arrived, it left Earth’s orbit in search of a new cosmic companion.

Now, astrophysicists at Cornell are suggesting that 2006 RH120 wasn’t an anomaly; a second temporary moon is actually the norm for our planet.

Temporary satellites are a result of the gravitational pull of Earth and the Moon. Both bodies pull on one another and also pull on anything else in nearby space. The most common objects that get pulled in by the Earth-Moon system’s gravity are near Earth objects (NEOs) — comets and asteroids are nudged by the outer planets and end up in orbits that bring them into Earth’s neighbourhood.

Near Earth object Eros, the type of object that could be a second satellite. Image credit: NASA

The team from Cornell, astrophysicists Mikael Granvik, Jeremie Vaubaillon, Robert Jedicke, has modeled the way our Earth-Moon system captures these NEOs to understand how often we have additional moons and how long they stick around.

They found that the Earth-Moon system captures NEOs quite frequently. “At any given time, there should be at least one natural Earth satellite of 1-meter diameter orbiting the Earth,” the team said. These NEOs orbit the Earth for about ten months, enough time to make about three orbits, before leaving.

Luckily, and very interestingly, this discovery has implication well beyond academic applications.

Knowing that these small satellites come and go but that one is always present around the Earth, astronomers can work on detecting them. With more complete information on these bodies, specifically their position around the Earth at a given time, NASA could send a crew out to investigate. A crew wouldn’t be able to land on something a few metres across, but they could certainly study it up close and gather samples.

Close up image of asteroid 243 Ida. Image credit: NASA/courtesy of nasaimages.org

Proposals for a manned mission to an asteroid have been floating around NASA for years. Now, astronauts won’t have to go all the way out to an asteroid to learn about the Solar System’s early history. NASA can wait for an asteroid to come to us.

If the Cornell team is right and there is no shortage of second satellites around the Earth, the gains from such missions increases. The possible information about the solar system’s formation that we could obtain would be amazing, and amazingly cost-efficient.

Source: Earth Must Have Another Moon, Astronomers Say

December 21, 2011December 24, 2015 by VirtualAstro

Winter Solstice – The Shortest day of the Year

Stonehenge Winter Solstice Credit: telegraph.co.uk

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Depending on how the calendar falls, the December solstice occurs annually on a day between December 20 and 23. This year, the December solstice will occur at 05:30 UTC (12:30 a.m. EST) on December 22, 2011. While the southern hemisphere is experiencing the long days of summer, the northern hemisphere will have the “winter solstice” – often called the shortest day of the year.

Conversely, six months ago the northern hemisphere experienced the longest day with the summer solstice, with the southern hemisphere having their winter solstice. This is part of a never ending cycle and is at the heart of our seasons.

So, why do we call it the shortest day of the year for the winter solstice and longest day for the solstice in the summer? Do we lose some time off the clock in winter, and in summer do we miraculously gain time on the clock in a bizarre cycle that is imposed by old men in charge of calendars and times around the world? (I used to think this as a small boy…)

The fact is we don’t lose or gain any time; what we actually gain or lose is hours of sunlight. During the winter solstice we receive the least amount of sunlight of the year on that day.

To understand the winter and summer solstices we need to recognize a fundamental fact about the Earth. Earth’s axis of rotation is tilted approximately 23.5° from a vertical axis. This means that as the tilted Earth orbits the Sun during the year, the different hemispheres receive varying amounts of sunlight, as this tilt causes sunlight to strike the surface of Earth at different angles at different times of year.

In the summer, we see the Sun for longer periods of time and it appears high in the sky; the Sun’s rays are more direct and the heat energy is more abundant. In the winter, when the Sun is low in the sky and appears for less amount of time; there is less energy and the Sun therefore heats less efficiently.

If you live near the equator, you won’t notice much difference in the amount of sunlight you receive throughout the year. The biggest noticeable difference is at the poles, where each solstice brings an extreme in the hours of sunlight you receive; in summer the Sun never properly sets for weeks, and in winter it never rises, creating some of the most inhospitable environments on Earth.

I always find the solstices to be magical times of year and look forward to either the longest or shortest days as they are the bringers of seasons, darkness and light.

December 16, 2011December 24, 2015 by Ken Kremer

NASA announces Feb. 7 launch for 1st SpaceX Docking to ISS

SpaceX Dragon spacecraft approaches ISS on Test Flight set for Feb. 7, 2012 launch. During the SpaceX COTS 2/3 demonstration mission in February 2012, the objectives include Dragon demonstrating safe operations in the vicinity of the ISS. After successfully completing the COTS 2 rendezvous requirements, Dragon will receive approval to begin the COTS 3 activities, gradually approaching the ISS from the radial direction (toward the Earth), to within a few meters of the ISS. Astronauts will reach out and grapple Dragon with the Station’s robotic arm and then maneuver it carefully into place over several hours of operations. Credit: NASA / SpaceX.

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Make or break time for NASA’s big bet on commercial space transportation is at last in view. NASA has announced Feb. 7, 2012 as the launch target date for the first attempt by SpaceX to dock the firms Dragon cargo resupply spacecraft to the International Space Station (ISS), pending final safety reviews.

The Feb. 7 flight will be the second of the so-called Commercial Orbital Transportation Services (COTS) demonstration flights to be conducted by Space Exploration Technologies, or SpaceX, under a contact with NASA.

Several months ago SpaceX had requested that the objectives of the next two COTS flights, known as COTS 2 and COTS 3, be merged into one very ambitious flight and allow the Dragon vehicle to actually dock at the ISS instead of only accomplishing a rendezvous test on the next flight and waiting until the third COTS flight to carry out the final docking attempt.

The Dragon will remain attached to the ISS for about one week and astronauts will unload the cargo. Then the spacecraft will depart, re-enter the Earth atmosphere splashdown in the Pacific Ocean off the coast of California.

“The cargo is hundreds of pounds of astronaut provisions,” SpaceX spokeswoman Kirstin Grantham told Universe Today.

SpaceX Dragon approaches the ISS
Astronauts can reach it with the robotic arm and berth it at the Earth facing port of the Harmony node. Illustration: NASA /SpaceX

“SpaceX has made incredible progress over the last several months preparing Dragon for its mission to the space station,” said William Gerstenmaier, NASA’s associate administrator for the Human Exploration and Operations Mission Directorate. “We look forward to a successful mission, which will open up a new era in commercial cargo delivery for this international orbiting laboratory.”

Since the forced retirement of NASA’s Space Shuttle following the final fight with orbiter Atlantis in July 2011 on the STS-135 mission, the US has had absolutely zero capability to launch either supplies or human crews to the massive orbiting complex, which is composed primarily of US components.

In a NASA statement, Gerstenmaier added, “There is still a significant amount of critical work to be completed before launch, but the teams have a sound plan to complete it and are prepared for unexpected challenges. As with all launches, we will adjust the launch date as needed to gain sufficient understanding of test and analysis results to ensure safety and mission success.”

SpaceX lofted the COTS 1 flight a year ago on Dec. 8, 2010 and became the first private company to successfully launch and return a spacecraft from Earth orbit. SpaceX assembled both the Falcon 9 booster rocket and the Dragon cargo vessel from US built components.

An astronaut operating the robot arm aboard the ISS will move Dragon into position at the berthing port where it will be locked in place at the Harmony node. Illustration: NASA /SpaceX

The new demonstration flight is now dubbed COTS 2/3. The objectives include Dragon safely demonstrating all COTS 2 operations in the vicinity of the ISS by conducting check out procedures and a series of rendezvous operations at a distance of approximately two miles and the ability to abort if necessary.

The European ATV and Japanese HTV cargo vessels carried out a similar series of tests during their respective first flights.

After accomplishing all the rendezvous tasks, Dragon will then receive approval to begin the COTS 3 activities, gradually approaching the ISS from below to within a few meters.

Specially trained astronauts working in the Cupola will then reach out and grapple Dragon with the Station’s robotic arm and then maneuver it carefully into place onto the Earth-facing side of the Harmony node. The operations are expected to take several hours.

The COTS Demo 2/3 Dragon spacecraft at Cape Canaveral. Photo: SpaceX

If successful, the Feb. 7 SpaceX demonstration flight will become the first commercial mission to visit the ISS and vindicate the advocates of commercial space transportation who contend that allowing private companies to compete for contracts to provide cargo delivery services to the ISS will result in dramatically reduced costs and risks and increased efficiencies.

The new commercial paradigm would also thereby allow NASA to focus more of its scarce funds on research activities to come up with the next breakthroughs enabling bolder missions to deep space.

If the flight fails, then the future of the ISS could be in serious jeopardy in the medium to long term because there would not be sufficient alternative launch cargo capacity to maintain the research and living requirements for a full crew complement of six residents aboard the orbiting laboratory.

Feb. 7 represents nothing less than ‘High Stakes on the High Frontier’.

NASA is all about bold objectives in space exploration in both the manned and robotic arenas – and that’s perfectly represented by the agencies huge gamble with the commercial cargo and commercial crew initiatives.

December 14, 2011December 24, 2015 by Ken Kremer

Revolutionary Air-Launched Commercial Rocket to Orbit Announced by Microsoft Billionaire Paul Allen

Stratolaunch Systems Carrier Aircraft - Air Launch to Orbit Space Launch System. Developed by Scaled Composites, the aircraft manufacturer and assembler founded by Burt Rutan. The carrier will loft and drop the 500,000 multistage SpaceX rocket that will propel payloads to orbit at dramatically reduced costs. It will be the largest aircraft ever flown with a wing span of 385 feet and weighing 1.2 million pounds. Credit: Stratolaunch Systems. Watch complete video below.

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A mega quartet of luminaries led by Microsoft co-founder Paul G. Allen and legendary aerospace designer Burt Rutan have joined forces to create a revolutionary new approach to space travel. This new privately funded venture entails the development of a mammoth air-launched space transportation system that aims to dramatically cut the high costs and risks of launching both cargo and human crews to low Earth orbit.

Allen and Rutan are teaming up with Elon Musk, founder of Space Exploration Technologies Corp, or SpaceX, and Michael Griffin, former NASA Administrator, to build the world’s largest aircraft ever flown and use it as a platform to loft a multi-stage SpaceX rocket that will deliver a payload of some 13,500 pounds into earth orbit, about the same class as a Delta II.

Allen and Rutan hope to build upon the spaceflight revolution that they pioneered with the suborbital SpaceShipOne in 2004, which was the first privately funded spaceship to reach the edge of space, and now take the critical next step and actually vault all the way to orbit.

Video Caption: Stratolaunch Systems is pioneering innovative solutions to revolutionize space transportation to orbit.

To accomplish this innovative leap, Allen and Rutan, announced the formation of a new company, funded by Allen, called Stratolaunch Systems at a press briefing today, Dec. 13, held in Seattle, WA. Allen is a billionaire and philanthropist who has funded a host of projects to advance science,

“Our national aspirations for space exploration have been receding,” Allen lamented at the start of the briefing. “This year saw the end of NASA’s space shuttle program. Constellation, which would have taken us back to the moon, has been mothballed as well. For the first time since John Glenn, America cannot fly its own astronauts into space.”

“With government funded spaceflight diminishing, there’s a much expanded opportunity for privately funded efforts.”

Rutan said that Stratolaunch will build a 1.2 million pound carrier aircraft sporting a wingspan of 385 feet – longer than a football field – and which will be powered by six 747 engines on takeoff. The carrier will be a twin fuselage vehicle, like the WhiteKnight developed by Rutan to launch SpaceShipOne.

The 120 foot long SpaceX rocket, weighing up to 490,000 pounds, will be slung in between and dropped at an altitude of about 30,000 feet for the remaining ascent to orbit.

SpaceX will construct a shorter, less powerful version of the firms existing Falcon 9 rocket, which may be either a Falcon 4 or Falcon 5 depending on specifications.

The new launch system will operate from a large airport or spaceport like the Kennedy Space Center, require a 12,000 feet long runway for takeoff and landing and be capable of flying up to 1,300 nautical miles to the payload’s launch point. Crews aboard the huge carrier aircraft will also conduct the countdown and firing of the booster and will monitor payload blasting to orbit.

“I have long dreamed about taking the next big step in private space flight after the success of SpaceShipOne – to offer a flexible, orbital space delivery system,” Allen said. “We are at the dawn of radical change in the space launch industry. Stratolaunch Systems is pioneering an innovative solution that will revolutionize space travel.”

The goal of Stratolaunch is to “bring airport-like operations to the launch of commercial and government payloads and, eventually, human missions,” according to a company statement.

Plans call for a first orbital flight within five years by around 2016. Test flights could begin around 2015.

“We believe this technology has the potential to someday make spaceflight routine by removing many of the constraints associated with ground launched rockets,” said Mike Griffin. “Our system will also provide the flexibility to launch from a large variety of locations.”

Mike Griffin added that the venture is aiming for the small to medium class payload market similar to what has been served by the venerable Delta II rocket, which is now being retired after decades of service.

“NASA’s science satellites could also be lofted by Stratolaunch.”

“At some point this vehicle could loft a crew of say six people,” Griffin stated.

“This is an exciting day,” concluded Allen.

“Stratolaunch will keep America at the forefront of space exploration and give tomorrow’s children something to search for in the night sky and dream about. Work has already started on our project at the Mojave Spaceport.”

SpaceX Dragon cargo spaceship propels commercial and science payloads to orbit following air-launch from gigantic carrier aircraft. Credit: Stratolaunch Systems

December 5, 2011December 24, 2015 by Tammy Plotner

Earth’s Magnetic Pole Reversal – Don’t “Flip Out”!

Schematic illustration of Earth's magnetic field. Credit/Copyright: Peter Reid

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Have you heard or read stories about how Earth will some day reverse its magnetic poles? If you have, then chances are very good you’ve also heard this perfectly normal function of our planet could spell disaster. Before you buy into another “end of the world as we know it” scenario, let’s take a look at the facts.

For the record, we know that Earth’s magnetic field has changed its polarity more than once in its lifetime. For example, if you could step back in time some 800,000 years ago with a compass in your hand, you’d see the needle pointed to south – instead of north. Why? Because a compass works on magnetic fields, its needle directs you to the magnetic pole, measured as either positive or negative. The markings on the modern compass dial would be incorrect if the polarity of Earth’s magnetic fields were reversed! Like a witch hunt, many would-be prophets say natural occurrences like this might signal doom… But could their theories be correct? Unfortunately for hyperbole, the geologic and fossil records from past reversals show the answer is “No.” We’ll still be around.

Just like the Sun reversing its magnetic poles, Earthly switches are just a part of our planet’s schedule. During about the last 20 million years of our formation, Earth has settled into a pattern of switching magnetic poles about every 200,000 to 300,000 years… with a period of twice that long since our last reversal. And, it’s not a thing that happens rapidly. Magnetic pole reversal takes up to several hundred thousands of years to complete. The fields blend together and magnetic poles pop up at odd latitudes as it happens. It’s not that scary! Scientists say that Earth has reversed its magnetic field hundreds of times over the last three billion years and have sped up slightly with time.

How do we know about the impacts of magnetic pole reversal? We take a look at the deep evidence – sediment cores taken from the ocean floor. These samples are perfect fossil records which show us what direction the magnetic field was pointed in as the underwater lava emerged. These ancient flows were magnetized in the field’s direction at the time of their creation and exist on either side of the Mid-Atlantic Rift where the North American and European continental plates are moving away from each other.

“The last time that Earth’s poles flipped in a major reversal was about 780,000 years ago, in what scientists call the Brunhes-Matuyama reversal. The fossil record shows no drastic changes in plant or animal life.” says NASA’s Patrick Lynch. ” Deep ocean sediment cores from this period also indicate no changes in glacial activity, based on the amount of oxygen isotopes in the cores. This is also proof that a polarity reversal would not affect the rotation axis of Earth, as the planet’s rotation axis tilt has a significant effect on climate and glaciation and any change would be evident in the glacial record.”

MagneticPole2 — A schematic diagram of Earth's interior and the movement of magnetic north from 1900 to 1996. The outer core is the source of the geomagnetic field. Graphic Credit: Dixon Rohr

Unlike a hard-wired magnet, Earth’s polarity isn’t constant – it moves around a bit. The reason we have a magnetic field is our solid iron core surrounding by hot, fluid metal. According to computer modeling, this flow creates electric currents which spawn the magnetic fields. While it’s not possible at this point in time to measure the outer core of our planet directly, we can guess at its movement by the changes in the magnetic field. One such change has occurred for almost 200 years now… Our northern pole has been shifting even more northward. Since it was first located, the pole has shifted its place by more than 600 miles (1,100 km)! What’s more, it’s speeding up. It would seem that it’s moving almost 40 miles per year now, instead of the 10 miles per year as recorded in the early 20th century.

Don’t be fooled by those saying a magnetic pole reversal would leave us temporarily without a magnetic field, either. This is simply isn’t going to happen and we’re not going to be exposed to harmful solar activity. While our magnetic field goes through weaker and stronger phases, there is simply no evidence to be found anywhere that it has ever disappeared completely. Even if it were weakened, our atmosphere would protect us against incoming particles and we’d have more auroral displays at lower latitudes!

So, go ahead… Sleep at night. Earthly magnetic pole reversal is a normal function of our planet and when it does happen its effects will be spread out over hundreds of thousands of years – not flipped like a pancake.

Original Story Source: NASA Earth News. For Further Reading: Earth’s Inconstant Magnetic Field..

December 1, 2011April 26, 2016 by Tammy Plotner

Ancient Zircons Help Reveal Early Earth Atmosphere

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Roughly 2.4 billion years ago, Earth’s atmosphere underwent a huge change known as the “Great Oxidation Event”. This switch from an oxygen-poor to an oxygen-rich environment may be accountable for giving rise to life. However, scientists are extremely curious about what our atmosphere may have been like not long after our planet formed. Now researchers from the New York Center for Astrobiology at Rensselaer Polytechnic Institute are using some of the oldest minerals known to exist to help understand what may have occurred some five million years after Earth arose.

For the most part, scientists have theorized that early-Earth atmosphere was dominated by noxious methane, carbon monoxide, hydrogen sulfide, and ammonia. This highly reduced mixture results in a limited amount of oxygen and has led to a wide variety of theories about how life may have started in such a hostile environment. However, by taking a closer look at ancient minerals for oxidation levels, scientists at Rensselaer have proved the early-Earth atmosphere wasn’t like that at all… but held copious amounts of water, carbon dioxide, and sulfur dioxide.

“We can now say with some certainty that many scientists studying the origins of life on Earth simply picked the wrong atmosphere,” said Bruce Watson, Institute Professor of Science at Rensselaer.

How can they be so sure? Their findings depend on the theory that Earth’s atmosphere was formed volcanically. Each time magma flows to the surface, it releases gases. If it doesn’t come to the top, then it interacts with the surrounding rocks where it cools and becomes a rocky deposit in its own right. These deposits – and their elemental construction – allows science to paint an accurate portrait of the conditions at the time of their formation.

“Most scientists would argue that this outgassing from magma was the main input to the atmosphere,” Watson said. “To understand the nature of the atmosphere ‘in the beginning,’ we needed to determine what gas species were in the magmas supplying the atmosphere.”

One of the most important of all magma components is zircon – a mineral nearly as old as Earth itself. By determining the oxidation levels of the magmas that formed these ancient zircons, scientists are able to deduce how much oxygen was being released into the atmosphere.

“By determining the oxidation state of the magmas that created zircon, we could then determine the types of gases that would eventually make their way into the atmosphere,” said study lead author Dustin Trail, a postdoctoral researcher in the Center for Astrobiology.

To enable their work, the team set about cooking up magma in a laboratory setting – which led to the creation of an oxidation gauge to assist them in comparing their artificial specimens against natural zircons. Their study also included a watchful eye for a rare Earth metal called cerium that can exist in two oxidation states. By exposing cerium in zircon, the team can be confident the atmosphere was more oxidized after their creation. These new findings point to an atmospheric state more like our present day conditions… setting the stage for a new starting point on which to base life’s beginnings on Earth.

“Our planet is the stage on which all of life has played out,” Watson said. “We can’t even begin to talk about life on Earth until we know what that stage is. And oxygen conditions were vitally important because of how they affect the types of organic molecules that can be formed.”

While “life as we know it” is highly dependent on oxygen, our current atmosphere probably isn’t the ideal model for spawning primordial life. It’s more likely a methane-rich atmosphere might “have much more biologic potential to jump from inorganic compounds to life-supporting amino acids and DNA.” This leaves the door wide open to alternate theories, such as panspermia. But don’t sell the team’s results short. They still reveal the beginning nature of gases here on Earth, even if they don’t solve the riddle of the Great Oxidation Event.

Original Story Source: Rensselaer Polytechnic Institute News Release.

November 21, 2011December 24, 2015 by Nancy Atkinson

Satellite Captures Unusual “Cloud Streets”

NASA' Terra satellite captured cloud streets in Hudson Bay, Canada on November 20, 2011 at 12:25 p.m. EST (17:25 UTC). Credit: NASA

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I love looking at unusual cloud formations, and these have to be some of the most intriguing. These long, horizontal rolls of clouds are called “cloud streets” and NASA’s Terra satellite had a “drive by” of these clouds, observing them over Hudson Bay, Canada on November 20, 2011 at 12:25 p.m. EST (17:25 UTC). These rows of clouds stretch from northwest to southeast over the Hudson Bay.

Cloud streets are long lines or bands of cumulus clouds that usually form within the lower one to three kilometers of the atmosphere, and come from eddies in the atmosphere.

According to NASA’s Earth Observatory and the Goddard Space Flight Center Flickr page, cloud streets form when cold air blows over warmer waters, while a warmer air layer—or temperature inversion—rests over top of both. The comparatively warm water of Hudson Bay gives up heat and moisture to the cold air mass above, and columns of heated air—thermals—naturally rise through the atmosphere. As they hit the temperature inversion like a lid, the air rolls over like the circulation in a pot of boiling water. The water in the warm air cools and condenses into flat-bottomed, fluffy-topped cumulus clouds that line up parallel to the wind.

Hudson Bay is a large body of saltwater located in northeastern Canada. Also in the image, are several snow-covered islands in Hudson Bay. The larger island to the north is South Hampton Island, and the smaller island east is Coats Island, and further east is Mansel Island.

November 3, 2011December 24, 2015 by Jason Major

A Night Flight Over the Mideast

India-Pakistan Border from ISS — India-Pakistan Border from orbit. Credit: NASA.

The cities of the Middle East and southern Asia shine bright in the night beneath the International Space Station as it passed high overhead on October 21, 2011.

This video, an animation made from dozens of still images taken by the Expedition 29 crew, was assembled by the Image Science and Analysis Laboratory at Johnson Space Center in Houston. It was uploaded to the Gateway to Astronaut Photography of Earth site on October 27.

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Some glare from the Moon (off screen to the upper left) can be seen in the Plexiglas of the ISS window. The strobe-like flashes are lightning in clouds. Airglow is also visible as a band of hazy green light surrounding the planet.

Another particularly noticeable feature visible in this video is the bright orange line of the border between India and Pakistan. Erected by the Indian government to prevent smuggling, nearly 1200 miles (1930 km) of floodlights and fences separate the two countries, creating a geopolitical feature easily visible from orbit.

The website’s description states:

The sequence of shots was taken October 21, 2011 from 19:53:26 to 20:25:24 GMT, on a pass beginning over Turkmenistan, east of the Caspian Sea to southeastern China, just northwest of Hong Kong. City lights show at the beginning of the video as the ISS travels southeastward towards the India-Pakistan borderline (click here for the Earth Observatory article to learn more about this area). Pakistan’s second largest city, Lahore, can be easily seen as the brightly lit area left of track. Immediately downtrack of Lahore is New Delhi, India’s capital city, with the Kathiawar Peninsula right of track dimly lit. Smaller cities in southern India can be seen as the pass continues southeastward through southern India, into the Bay of Bengal. Lightning storms are also present, represented by the flashing lights throughout the video. The pass ends over western Indonesia, looking left of track at the island of Sumatra.

I particularly like the way the stars shine so prominently beyond Earth’s limb, and how the moonlight illuminates the clouds… not to mention the bloom of dawn at the end. What an incredible sight this must be for the ISS crew members! I can’t imagine ever getting tired of seeing this outside the Station windows.

Watch more ISS videos here.

Video courtesy of the Image Science & Analysis Laboratory, NASA Johnson Space Center.

November 3, 2011April 13, 2022 by Ken Kremer

Phobos and Jupiter Conjunction in 3 D and Amazing Animation – Blastoff to Martian Moon near

3 D view of the rare Phobos–Jupiter conjunction taken on 1 June 2011 by the High Resolution Stereo Camera on Mars Express. Credits: ESA/DLR/FU Berlin (G. Neukum)

Video Caption: Phobos and Jupiter in Conjunction – taken from Mars orbit !
A movie of the 1 June 2011 Phobos–Jupiter conjunction made by combining a sequence of 100 images of the encounter taken by the High Resolution Stereo Camera on ESA’s Mars Express orbiter. Mars Express is searching for safe landing zones on Phobos for Russia’s Phobos-Grunt lander blasting off on November 9. Credits: ESA/DLR/FU Berlin (G. Neukum)
3 D images of Phobos-Jupiter conjuction below
Update – Phobos-Grunt launch processing photo below

In just 7 days, Russia’s Phobos-Grunt sample return mission will blast off for Mars on November 9 on a daring mission to grab soil samples from the surface of the miniscule martian moon Phobos and return them back to Earth for analysis to give us breathtaking new insights into the formation and evolution of Mars, Phobos and our Solar System.

So, check out the amazing animation and 3 D stereo images of fish-like Phobos and banded Jupiter snapped by Europe’s Mars Express orbiter to get a bird’s eye feel for the battered terrain, inherent risks and outright beauty that’s in store for the Phobos -Grunt spaceship when it arrives in the Red Planet’s vicinity around October 2012. Whip out your red-cyan 3 D glasses – Now !

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ESA’s Mars Express orbiter (MEX) was tasked to help Russia locate suitable and safe landing sites on Phobos’ pockmarked terrain. MEX was built by ESA, the European Space Agency and has been in Mars orbit since 2003.

To capture this impressive series of rare photos of Jupiter and Phobos in conjunction, Mars Express performed a special maneuver to observe an unusual alignment of Jupiter and Phobos on 1 June 2011.

Mars Express High Resolution Stereo Camera (HRSC) snapped a total of 104 images over 68 seconds when the distance from the spacecraft to Phobos was 11,389 km and the distance to Jupiter was 529 million km.

Phobos- Jupiter Conjunction: before, during and after on 1 June 2011 from Mars Express. Credits: ESA/DLR/FU Berlin (G. Neukum)

Enjoy the exquisite views of the bands of Jupiter and imagine exploring the deep pockets and mysterious grooves on Phobos – which may be a captured asteroid.

The camera was kept fixed on Jupiter, to ensure it remained static as Phobos passed in front and which afforded an improvement in our knowledge of the orbital position of Phobos.

Phobos in 3 D during flyby of 10 March 2010. Image taken from a distance of 278 km. Russia’s Phobos-Grunt will retrieve rogolith and rock for return to Earth. Credit: ESA/DLR/FU Berlin (G. Neukum)

NASA’s twin Mars rovers Spirit and Opportunity have also occasionally photographed both of Mars’ moons to further refine their orbital parameters.

NASA’s Curiosity rover remains on track to liftoff for Mars on Nov. 25

Orbital Paths of Phobos and Mars Express. The trajectories of Phobos and Mars Express at the time of the conjunction with Jupiter on 1 June 2011. The letter ‘S’ denotes the South Pole of Mars.

Technicians at Baikonur Cosmodrome prepare Phobos-Grunt for upper stage attachment. Credit: Roscosmos

Read Ken’s continuing features about Phobos-Grunt here:
Russia Fuels Phobos-Grunt and sets Mars Launch for November 9
Phobos-Grunt and Yinghou-1 Arrive at Baikonur Launch Site to tight Mars Deadline
Phobos-Grunt: The Mission Poster
Daring Russian Sample Return mission to Martian Moon Phobos aims for November Liftoff

October 31, 2011April 13, 2022 by Ken Kremer

Shenzhou-8 rolled out for Blastoff to China’s 1st Space Station on November 1

Shenzhou 8 spaceship and its launch vehicle Long March 2F/Y8 were transferred to the Jiuquan launch pad. Liftoff is scheduled for Nov. 1. China’s VAB in the background. Credit: CMSE

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China’s Shenzhou-8 capsule and the Long March booster rocket have been rolled out to the Gobi desert launch pad and will blast off early on November 1 bound for the 1st orbiting Chinese prototype space station – named Tiangong-1 (which translates as Heavenly Palace-1).

If successful, the Shenzhou -8/Tiangong -1 combined orbital complex will certainly be a ‘great leap forward’ for China’s space program ambitions and technological prowess while NASA’s current and future ambitions are being significantly curtailed by relentless budget cuts directed by politicians in Washington, D.C. – a fact noted by Chinese media.

Shenzhou-8, an unmanned spacecraft, and its carrier, Long March 2-F, are transported to the launch pad at the Jiuquan Satellite Launch Center in Northwest China's Gansu province. It is expected to perform China's first space docking with Tiangong-1, a lab module that went up in September from the same facility. Credit: Su Dong/China Daily

The unmanned Shenzhou- 8 capsule will lift off at 5:58 a.m. local time from the Jiuquan Satellite Launch Center located in Gansu province in northwest China.

Propellants are being loaded into the upgraded Long March 2F/Y8 carrier rocket today (Oct. 31). All launch preparations and tests are proceeding on schedule according to to the China Manned Space Engineering (CMSE) office – the state run government agency responsible for China’s human spaceflight program.

Prelaunch exercises are being coordinated by the Beijing Aerospace Flight Control Center, the command center for the Chinese space program.

The fully assembled vehicles were vertically transported some 1500 meters over about 2 hours along rail tracks from China’s version of NASA’s VAB, or the Vehicle Assembly Building.

The 8 ton Tiangong-1 target module was launched from Jiuquan on September 29 and is functioning perfectly

The Shenzhou VIII spacecraft is assembled with the Long-March II-F rocket at the Jiuquan Satellite Launch Center in Northwest China's Gansu province on Oct 23, 2011. Credit: CFP

The Long March 2F booster is the tallest, heaviest and most powerful in China’s arsenal of rockets.

Tiangong-1 has been maneuvered to rotate 180 degrees in orbit in anticipation of the upcoming launch according to CMSE.

The emergency escape tower is hoisted to Shenzhou-8 at the Jiuquan Satellite Launch Center on Oct 23, 2011. Credit: CFP

Shenzhou is China’s human rated capsule but is flying in an unmanned configuration for this flight – #8 – which will be China’s first ever attempt at critical Rendezvous & Docking maneuvers in earth orbit that are required to construct a Space Station- China’s long term goal by 2020 .

Shenzhou-8 will conduct at least two docking practice tests. After the first docking, the two ships will remain joined for about 12 days and then separate to carry out another docking.

So far China has conducted 3 manned flights, the first in 2003. Currently the US has no capability to launch astronauts to earth orbit and the ISS and is totally reliant on Russian Soyuz rockets and capsules to hitch a ride to space.

Two crewed flights to Tiangiong-1 are planned for 2012. The multi-person crews aboard Shenzhou 9 & Shenzhou 10 are likely to include China’s first woman astronaut. The chinese crews would float into Tiangong 1 from their capsules and remain on board for short duration missions of a few days or weeks. They will check out the space systems and conduct medical, space science and technology tests and experiments.