Kick back and watch the clouds go by — on Mars! Emily Lakdawalla at the Planetary Society Blog has put together a very nifty video from Mars Express data, showing clouds in motion over Mars. Emily has just learned a new technique called ‘tweening’ to create smooth animation videos from a series of images that are not at a very high frame rate. She explains more about the technique on her blog post here and has promised a two-part “how to” explainer for those interested in learning how to do this for yourself.
The cloudy area shown on Mars is within Noachis Terra to the west of Hellas basin, around 45 degrees south, 38 east.
JPL's 'Hot Wheels' - The Mars Science Laboratory or 'Curiosity' is being prepared to launch to mars this November. Photo Credit: Alan Walters/awaltersphoto.com
[/caption]
CAPE CANAVERAL, Fla. – NASA is experiencing what could be dubbed a “summer of planetary exploration.” With the Juno mission to Jupiter on its way as of Aug. 5, NASA is prepping not one but two more missions – this time to terrestrial bodies – specifically the Moon and Mars.
On Sept. 8 NASA is planning to launch GRAIL (Gravity Recovery And Interior Laboratory). This mirror image spacecraft consists of two elements that will fly in tandem with one another and scan the Moon from its core to its crust. This mission will serve to expand our understanding of the mechanics of how terrestrial bodies are formed. GRAIL will provide the most accurate gravitational map of the Moon to date.
The aeroshell that will cover both the MSL rover and its jetpack landing system. Photo Credit: Alan Walters/awaltersphoto.com
When it comes to upcoming projects that have “celebrity” status – few can compete with the Mars Science Laboratory (MSL) or Curiosity. The six-wheeled rover was part of a media event Friday Aug. 12 that included the “Sky-Crane” jetpack that is hoped will safely deliver the car-sized rover the Martian surface. Also on display was the back half of the rover’s aeroshell which will keep the robot safe as in enters the red planet’s atmosphere.
Numerous engineers were available for interview, one expert on hand to explain the intricacies of how Curiosity works was the Rover Integration Lead on the project, Peter Illsley.
One fascinating aspect of MSL is how the rover will land. As it pops free of the aeroshell, a jet pack will conduct a powered descent to Mars’ surface. From there the rover will be lowered to the ground via wires, making Curiosity look like an alien spider descending from its web. Once the rover makes contact with the ground, the wires will be severed and the “Sky-Crane” will fly off to conduct a controlled crash. Ben Thoma, the mechanical lead on this aspect of the project, described how he felt about what it is like to work on MSL.
MSL is slated to launch this November atop a United Launch Alliance (ULA) Atlas V 541 rocket. If everything goes according to plan the rover will begin exploring Mars’ Gale Crater for a period of approximately two years. In every way Curiosity is an upgraded, super-charged version of the rovers that have preceded her. The Pathfinder rover tested out many of the concepts that led to the Mars Exploration Rovers Spirit and Opportunity and now MSL has incorporated lessons learned to take more robust scientific explorations of the Martian surface.
The "Sky-Crane" jetpack that will be used to slowly lower the MSL rover to the Martian surface. Photo Credit: Alan Walters/awaltersphoto.com
CAPE CANAVERAL Fla. – Many experts took time out of their hectic schedules to talk with Universe Today in the day leading up to the launch of the Juno spacecraft. Some even took the time to talk to us just minutes before the probe was scheduled to be launched on its mission. Check out what they had to say below:
Juno Project Scientist Steve Levin was at Kennedy Space Center to watch the Juno probe begin its five-year journey to Jupiter. He took a few minutes of his time to talk about what his expectations are for this mission.
Levin has been with JPL since 1990, one of the previous projects he worked on is the Planck mission which launched in 2009.
Levin believes that Juno could fundamentally change the way we view Jupiter. He was one of many VIPs that descended on Kennedy Space Center to watch as Juno thundered to orbit atop at Atlas V rocket.
Sami Asmar is part of the science team that is working on the Juno project. He was at the rollout of the Atlas rocket to the pad. Here is what he had to say about the mission (note the Atlas rocket moving out behind him).
Bill Nye the Science Guy was a very busy man while at Kennedy Space Center. He still took the time to chat with Universe Today about his views on this mission. Unfortunately, with little time to spare, we had to conduct the interview within minutes of the first launch attempt. A good chunk of Nye’s interview – was drowned out by the lead up to the countdown!
The usual launch of an Atlas consists of the launch team coming in, pushing a button and going home – the launch vehicle is that reliable. This day, things occurred quite differently. A technical issue coupled with a wayward boat that had drifted too close to the launch pad saw the launch time slip from 11:34 a.m. EDT to 12:25 p.m. When the rocket did take off however it was a spectacular sight to behold, faster than other iterations of the Atlas, it roared off the pad, sending Juno on its way to Jupiter.
Artist concept of LRO in lunar orbit. Credit: NASA
[/caption]
NASA’s Lunar Reconnaissance Orbiter (LRO) is changing our view of the Moon by literally bringing it into sharper focus with its three high resolution cameras. But now, things are about to get even sharper. Today, LRO fired its thrusters to begin dipping down from its usual orbit about 50 km above the surface and moving to an orbit that will allow the spacecraft’s cameras me to image the Apollo sites from about 20 km away.
“This will allow me to obtain images of the Apollo sites that are about 4 times sharper than my current best images,” said the LRO spacecraft on Twitter.
This is just a temporary orbit and the spacecraft will take images of and around the Apollo sites between August 14 and 19, 2011. After that, the spacecraft will return to the 50-km-orbit until December.
LRO has two narrow angle cameras (NACs) and one wide angle camera (WAC).
According to Mark Robinson, LROC Principal Investigator, who spoke at the Lunar Forum at Ames Research Center last month, as of the end of July, 2011 the amount of data returned by LRO has been about 400 gigabits of data every day, which includes 371,027 high resolution images. The WAC has taken about 160,000 images, with about 90,000 in color. In total, the spacecraft has imaged the entire Moon about 20 times with the WAC, and has imaged 20 per cent of the moon with NACs, which provides a narrower but higher resolution view.
“We want to map the whole moon at 50 cm/pixel to 200 cm/pixel, and that would be LROC’s legacy for the next 100 years of lunar exploration and science,” Robinson said.
He noted that all three cameras are performing way better than he had hoped.
“We are very excited about the quality of the data,” Robinson said.
So get ready for a little more quality views of the Apollo landing sites!
Update: as commenter MoonOrBust noted, the LRO Twitter feed had an addendum later in the day, adding that there are several technical challenges associated with getting improved resolution images at the lower altitude orbit. For example, the spacecraft will not slow from its orbital speed of about 1.6 km/s (about 3,500 mph) when it gets closer to the Moon’s surface, which might cause some image blurring, particularly for the LROC Narrow Angle Camera images. “However, it will certainly be fun to compare the images from the different orbits!” the spacecraft Tweeted.
Here’s a fantastic look at launch day for the Juno spacecraft, now on its way to Jupiter. It’s hard not to get pumped up for the mission after watching the Atlas V rocket blast into space, sending Juno on its journey. This video is courtesy the United Launch Alliance (ULA). Universe Today will have more original videos from launch day soon from our team of photographers and videographers who were on hand at Kennedy Space Center.
NASA’s new science probe to Jupiter, Juno, will make its first launch attempt on Friday, Aug. 5 at 15:34 UT (11:34 a.m. EDT) from Cape Canaveral Air Force Station in Florida. Watch it live on NASA TV’s UStream channel.
An image combining orbital imagery with 3-D modeling shows flows that appear in spring and summer on a slope inside Mars' Newton crater. Image credit: NASA/JPL-Caltech/Univ. of Arizona
[/caption]
In a news conference today, NASA announced discoveries that provide additional evidence of seasonal water flows on Mars. Using data collected by the Mars Reconnaissance Orbiter, the MRO team presented images of dark lines that form on slopes during the martian spring/summer and fade in winter.
During the news conference, HIRISE principal investigator Alfred McEwen (University of Arizona), discussed that these “finger-like” features were found in Mars’ mid-southern latitudes. “The best explanation for these observations so far is the flow of briny water,” he said.
McEwen based his explanation on several key facts: First, salt lowers the freezing point of water (“plain” water would simply stay frozen on Mars) Secondly, the temperature on Mars during these flows ranges from -23 to +27 degrees Celsius, which rules out CO2. While there is significant evidence of flowing water, the team did state that there is no direct detection of water since it evaporates quickly on Mars.
Regarding the dark color of the flows, McEwen added, “The flows are not dark because of being wet, they are dark for some other reason.” McEwen also mentioned that researchers will need to re-create Mars-like conditions in the lab to better understand these flows, stating, “It’s a mystery now, but I think it’s a solvable mystery with further observations and laboratory experiments.”
MRO Project Scientist Richard Zurek (JPL) offered his thoughts as well. “These dark lineations are different from other types of features on Martian slopes,” he said, “and repeated observations show they extend ever farther downhill with time during the warm season.”
This series of images shows warm-season features that might be evidence of salty liquid water active on Mars today. Image credit: NASA/JPL-Caltech/Univ. of Arizona (click to view full animation)
What also proves intriguing to the team is that while gullies are very abundant on colder slopes that face the poles, the dark flows discussed in today’s news conference are found on warmer slopes which face the equator.
During the conference, Philip Christensen (Arizona State University) presented a map showing concentrations of “salts” in the same locations that the dark, “finger-like” flows were found.
McEwen reiterated during the Q&A session that the Compact Reconnaissance Imaging Spectrometer for Mars (CRISM), hasn’t detected any signs of water and that laboratory simulations will be necessary to gain a better understanding of these features – basically the team is seeing signs of flowing water, but not the water itself.
If you’d like to learn more about the Mars Reconnaissance Orbiter and today’s announcement, you can visit: http://www.nasa.gov/mro
This map of Mars shows relative locations of three types of findings related to salt or frozen water, plus a new type of finding that may be related to both salt and water. Credit: NASA/JPL-Caltech/ASU/UA/LANL/MSSS
Back in 1979, scientists at Stanford University created a 3-D movie from images sent back by the Viking landers on Mars. It was rather novel in that, while 3-D movies had been around since the 1950’s — mostly for low-budget B movies in theaters — this stereographic film was more scientific in nature, but was created for the public to learn more about the Viking mission and Mars, providing a “you are there” experience. It was created using 16mm film, which degrades over time. Considering the unique historical and scientific value of this film, a group from NASA’s Ames Research Center have constructed a new remastered digital version, made from the original 16mm film footage, sound reels, and related documentation.
Plans are underway to hold screenings of this new version of Mars in 3-D in Digital Cinema 3-D format. But in the meantime you can watch it now online in a digital anaglyph version, best viewed with red-cyan 3-D glasses.
Read more about the remastering process and read original papers from the imaging team from Viking at the Ames History Office website.
Last week scientists, engineers and others who work on the Mars Exploration Rover mission paid tribute to the Spirit rover which explored Mars for six years before succumbing to the harsh Martian winter in 2010. I was away at a conference last week and missed it, but fortunately the event was recorded and you (and I!) can watch it below. Above is a video photo diary of Spirit’s accomplishments on Mars.
It’s official: the Mars Science Laboratory rover, Curiosity, will be landing Gale Crater on Mars. Scientists announced the final decision at a special event at the Smithsonian’s National Air and Space Museum Friday morning. Comparing the terrain to an enticing bowl of layered Neopolitan ice cream, the science team announced the rover will land at the foot of a layered mountain inside Gale Crater.
“The science at Gale is going to be amazing and it will be a beautiful place to visit,” said Dawn Sumner, a geologist with the MSL team.
MSL is scheduled to launch in November 2011 from NASA’s Kennedy Space Center in Florida and land in August 2012. Curiosity is twice as long and more than five times as heavy as previous the Mars Exploration rovers Spirit and Opportunity. The rover will study whether the landing region at Gale crater had favorable environmental conditions for supporting microbial life and for preserving clues about whether life ever existed.
News had leaked out a few weeks ago that Gale was the favored site, but scientists today explained what made Gale stand out among the four final candidates, which each offered their own delicious “flavor,” making the decision a difficult one.
NASA has selected Gale crater as the landing site for the Mars Science Laboratory mission. Image Credit: NASA/JPL-Caltech/ASU
“When it comes down to four landing sites, it comes down to what feels right,” said John Grotzinger, Mars Science Laboratory project scientist. “We as a science team, as a community, we got together and in the end we picked the one that felt best. Why? Here, we’ve got mountain of rocks, taller than Mount Whitney. It looks like Hawaii; it’s not a tall spire, but a broad mound. So we can actually climb up this mountain with the rover. That alone justifies sending the spacecraft there. It turns out, though, the most attractive science sites are at the base of the mountain. We can address the principle goals of the things the Mars community would like answers to.”
NASA’s strategy for Mars has been to “follow the water,” since we know that wherever there is water on Earth, there is life. Scientists are hedging their bets on Mars that wherever liquid water once flowed would be the best places to look for evidence of past habitability.
Gale has that going for it.
Gale Crater stratigraphy. Iimage courtesy Matt Golombek.
The portion of the crater where Curiosity will land has an alluvial fan likely formed by water-carried sediments. The layers at the base of the mountain contain clays and sulfates, both known to form in water.
“It’s a huge crater sitting in a very low-elevation position on Mars, and we all know that water runs downhill,” Grotzinger said. “In terms of the total vertical profile exposed and the low elevation, Gale offers attractions similar to Mars’ famous Valles Marineris, the largest canyon in the solar system.”
The scientists emphasized that MSL is not a life detection mission, as it can’t look for fossils. But it can detect organic carbon, which can tell the early environmental story of Mars, found in the sediments within rocks.
Gale Crater crater spans 154 kilometers (96 miles) in diameter and is about the combined area of Connecticut and Rhode Island. The mound in the center rises 5 km (3 miles) height and the Layering in the mound suggests it is the surviving remnant of an extensive sequence of deposits.
The crater is named for Australian astronomer Walter F. Gale.
About the size of a Mini-Cooper, Curiosity has 17 cameras and a full color video camera. The mission should offer incredible vistas that will likely wow the public, beginning with the landing, as Curiosity will take a full color, high definition movie as it descends on the “Sky Crane” landing system.
