Great Image: Dust Devils on Mars

While all attention is on Ceres, let's not forget another water-bearing planet between ourselves and Ceres. The image above demonstrates the nature of the dry and denuded surface of Mars, while the water Itself lies deeper below the surface.

Here is the story from NASA: 

It was late in the northern martian spring when the HiRISE camera onboard the Mars Reconnaissance Orbiter spied this local denizen. Tracking across the flat, dust-covered Amazonis Planitia in 2012, the core of this whirling dust devil is about 140 meters in diameter. Lofting dust into the thin martian atmosphere, its plume reaches about 20 kilometers above the surface. Common to this region of Mars, dust devils occur as the surface is heated by the Sun, generating warm, rising air currents that begin to rotate. Tangential wind speeds of up to 110 kilometers per hour are reported for dust devils in other HiRISE images.

NASA recently reported that about 4.3 billion years ago Mars had enough water to cover its surface in water that was 450 feet deep. It is believed the water formed an ocean in the planet's northern hemisphere, being more than a mile deep in some areas (see image below).  Most of this water later later escaped into space. 

Image Credit Above: HiRISE, MRO, LPL (U. Arizona), NASA
Image Credit Below:  NASA's Goddard Space Flight Center

The Beagle Has Landed!

Earlier today on the Beagle2 website, this was still the concluding entry on the mission: 

Beagle 2 was due to land on Mars on 25th December 2003. The spacecraft was successfully ejected from Mars Express on 19th December 2003. Nothing has been heard from Beagle 2 and the mission is presumed lost.

Well, now we know that the United Kingdom's Beagle 2 Mars Lander (model shown below) made it to the surface of Mars.  As shown in the NASA image above from the Mars Reconnaissance Orbiter (MRO), the lander, parachute, and cover were all located close together.  NASA noted:

 Analysis of the images indicates what appears to be a partially deployed configuration, with what is thought to be the rear cover with its pilot/drogue chute (still attached) and main parachute close by. Due to the small size of Beagle 2 (less than 7 feet, or 2 meters across for the deployed lander) it is right at the limit of detection of HiRISE, the highest-resolution camera orbiting Mars. The targets are within the expected landing area at a distance of about three miles (five kilometers) from its center.

 A European Space Agency press release expressed relief that the Beagle's story was now known: 

"We are very happy to learn that Beagle-2 touched down on Mars. The dedication of the various teams in studying high-resolution images in order to find the lander is inspiring,” says Alvaro Giménez, ESA’s Director of Science and Robotic Exploration. 

“Not knowing what happened to Beagle-2 remained a nagging worry. Understanding now that Beagle-2 made it all the way down to the surface is excellent news,” adds Rudolf Schmidt, ESA’s Mars Express project manager at the time.

The Beagle2 website has an interesting Q&A on the chances of a rover stumbling upon it:

Is there any chance that NASA's rovers can go and find Beagle 2? Beagle 2 has landed in the Isidis Planitia basin (about 90 degrees East, 10 degrees North). Spirit has landed in the Gusev Crater (about 175 degrees East, 15 degrees South). Opportunity is due to land on the Meridiani Planum (about 354 degrees East, 2 degrees South). In Earth terms this is approximately equivalent to Beagle 2 being in Sri Lanka (in the Indian Ocean), Spirit being in Fiji (in the Pacific Ocean) and Opportunity being south of Ghana (in the South Atlantic Ocean). Mars is about half the diameter of Earth, but even with these figures you can get an idea of how far apart the landing sites are. The NASA rovers can travel up to about a kilometre (0.6 miles) at an average rate of about 1 cm/sec (approximately 0.036 kmph or 0.02 mph), so contact with Beagle 2 would not be remotely possible.

Although NASA could not help with the rovers, but it certainly helped with the MRO. 
 

Top Image Credit: NASA/JPL-Caltech/Univ. of Arizona/University of Leicester. The image was taken in 2014 by NASA's MRO's HiRISE camera.

Bottom Image Credit:  Beagle 2 website.  All rights reserved Beagle 2.

All is Well in the Martian Skies

I was glad to read that the various man-made Martian satellites survived the recent comet flyby (it helps that NASA had plenty of warning and placed the spacecraft at a safe distance to observe the event). With MAVEN having just arrived (Mars Odyssey and Mars Reconnaissance Orbiter have been orbiting for a while), as well as it's Indian peer, this could have been a problem. Given the numerous national failures to reach Mars, the last thing we need is a monster snow ball sweeping the survivors from the sky.  Comet C/2013 A1 Siding Spring  can now go back to rattling around the solar system. 

Traffic Jam Over Mars

With NASA's Mars Atmosphere and Volatile Evolution (MAVEN) spacecraft arriving at Mars earlier this week, and now India's Mars Orbiter Mission (MOM) also arriving today, things are getting crowded in the Martian skies.

MAVEN's main focus will be the planet's upper atmosphere to determine what happened to the Red Planet's former atmosphere - did it blow away or submerge itself into the planet's surface?  India's MOM main mission was simply to arrive at Mars and thereby prove India's ability to accomplish interplanetary travel.  Mission accomplished!  Now that the probe is in orbit, it can begin a number of experiments to better understand the planet beneath it.

The two spacecraft join others already in orbit and still busy conducting observations, including NASA's Mars Odyssey launched in 2001 and the Mars Reconnaissance Orbiter launched in 2005, as well as the European Space Agency's Mars Express launched in 2003.  Other dead spacecraft may still be circling the Red Planet, such as NASA's Mars Global Surveyor, which stopped communicating in 2007.  Let's hope everyone can keep to their own orbit without colliding. 

Great Image: The Curiosity Rover From Above

In the image above from earlier this month, the Mars Reconnaissance Orbiter is looking down on Mars' surface and caught a shot of the Curiosity Rover as it explored the surface of the planet.  Here is the story from NASA's Jet Propulsion Laboratory: 

NASA's Curiosity Mars rover and tracks from its driving are visible in this view from orbit, acquired on April 11, 2014, by the High Resolution Imaging Science Experiment (HiRISE) camera on NASA's Mars Reconnaissance Orbiter.

The rover is near the largest butte in the lower left quadrant of the image, at about a two o'clock position relative to the butte. It appears bright blue in the exaggerated color of this image.

The multi-layered location filling much of the left half of this image is called "the Kimberley." Curiosity's science team chose it, based on other HiRISE images, as a potential gold mine for the rover mission. Black gold, that is, as organic material that, if found at the Kimberley could be a biomarker (sign of past life) -- the holy grail of Mars exploration.

Curiosity entered the area included in this image on March 12, along the tracks visible near the upper left corner. The distance between parallel wheel tracks is about 9 feet (2.7 meters). The area included in the image is about 1,200 feet (about 365 meters) wide. This view is an enhanced-color product from HiRISE observation ESP_036128_1755, available at the HiRISE website at http://uahirise.org/releases/msl-kimberley.php. The exaggerated color, to make differences in Mars surface materials more apparent, makes Curiosity appear bluer than the rover really looks. A stereo view combining information from this observation with topography derived from earlier HiRISE observations, for a three-dimensional appearance, is at PIA18082.

Image Credit: NASA/JPL-Caltech/Univ. of Arizona

New Impact Crater on Mars

Earlier this week NASA's Jet Propulsion Laboratory reported on a new impact crater on Mars.  The crater was spotted last November using the Mars Reconnaissance Orbiter's High Resolution Imaging Science Experiment (HiRISE) camera.  The impact happened sometime between July 2010 and May 2012.

About 100 feet in diameter, the crater produced a beautiful spread of colors, including an odd powder blue that you would not associate with Mars.  In the accompanying text, JPL explains "Because the terrain where the crater formed is dusty, the fresh crater appears blue in the enhanced color of the image, due to removal of the reddish dust in that area." 

More Curosity Photos From Mars

NASA's Curiosity continues to send fascinating photos of the journey ahead.  Below is a shot of the distant rim of Gale Crater. 

 And below is a photo of the landing site with the various mission pieces scattered throughout the area.

 Here is NASA's description of the scene above:

The four main pieces of hardware that arrived on Mars with NASA's Curiosity rover were spotted by NASA's Mars Reconnaissance Orbiter (MRO). The High-Resolution Imaging Science Experiment (HiRISE) camera captured this image about 24 hours after landing. The large, reduced-scale image points out the strewn hardware: the heat shield was the first piece to hit the ground, followed by the back shell attached to the parachute, then the rover itself touched down, and finally, after cables were cut, the sky crane flew away to the northwest and crashed. Relatively dark areas in all four spots are from disturbances of the bright dust on Mars, revealing the darker material below the surface dust.