The first nighttime photos from Mars.
The first nighttime photos from Mars.
Tag: Mars
The seasons change on Mars.
The seasons change on Mars.
With three years of data in hand the researchers report on the sequence and variety of changes that take place over the spring, including outbursts of gas carrying sand, polygonal cracking of the ice on the dunes, sandfalls down the slipface of the dunes, and dark fans of sand propelled out onto the ice. Gas escaping from under the seasonal layer of dry ice erodes channels in the dunes, reminiscent of the erosion that carves more permanent “spider” channels in the southern hemisphere polar region.
Happy 10th anniversary to the Opportunity rover on Mars!
Happy 9th anniversary to the Opportunity rover on Mars!
Talk about getting your money’s worth: The rover was planned as a 90 day mission.
Data from Mars Reconnaissance Orbiter now suggests that a lake in a Martian crater had filled from groundwater coming up from below.
Data from Mars Reconnaissance Orbiter now suggests that a lake in a Martian crater had filled from groundwater coming up from below.
This is an important discovery, as it demonstrates that an underground water table had existed on Mars, at least at this location. With such a water table, it is possible for all kinds of interesting biological things to have taken place, underground.
New images of a dry river on Mars.
New images of a dry river bed on Mars.
Reull Vallis, the river-like structure in these images, is believed to have formed when running water flowed in the distant martian past, cutting a steep-sided channel through the Promethei Terra Highlands before running on towards the floor of the vast Hellas basin. This sinuous structure, which stretches for almost [1000 miles] across the Martian landscape, is flanked by numerous tributaries, one of which can be clearly seen cutting in to the main valley towards the upper (north) side.
Volunteers are needed to analyze images from Mars.
Volunteers are needed to analyze images from Mars. From the website:
We need your help to find and mark ‘fans’ and ‘blotches’ on the Martian surface. Scientists believe that these features indicate wind direction and speed. By tracking ‘fans’ and ‘blotches’ over the course of several Martian years to see how they form, evolve, disappear and reform, we can help planetary scientists better understand Mars’ climate. We also hope to find out if these features form in the same spot each year and also learn how they change.
Curiosity spots a Martian “flower.”
Curiosity spots a Martian “flower.”
Actually, Ian O’Neill notes, it isn’t really a flower but a very interesting geological formation embedded in the rock.
A design problem in Curiosity’s drill makes it a threat for shorting out the electronics of the entire rover at some point in the future.
Oy. A design problem in Curiosity’s drill makes it a threat to short out the electronics of the entire rover at some point in the future.
A tour of the impact craters that Curiosity created when it landed on Mars.
A tour of the impact craters that Curiosity created when it landed on Mars.
NASA announced yesterday plans to launch by 2020 a twin rover of Curiosity to Mars.
NASA announced yesterday plans to launch by 2020 a twin rover of Curiosity to Mars.
Though it makes sense to use the same designs again, saving money, I must admit a personal lack of excitement about this announcement. First, I have doubts it will fly because of the federal government’s budget woes. Second, it is kind of a replacement for the much more challenging and exciting missions to Titan and Europa that the Obama administration killed when they slashed the planetary budget last year.
The press lets Curiosity get the better of them
The big news is out. Today the eagerly awaited press conference at the American Geophysical Society meeting in San Francisco on the recent results from the Mars rover Curiosity was finally held. The announced results had been hyped like crazy when rumors began to spread a few weeks ago that Curiosity had discovered something truly spectacular.
Well, here are some of the headlines heralding the results.
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NASA is downplaying the hype about a big discovery by Curiosity.
Surprise, surprise! NASA is downplaying the hype about a possible big discovery by Curiosity.
As I noted, Curiosity might have found something that is interesting and exciting, but every news source that hyped this story deserves criticism. Good journalism is reporting the news, not speculating about something that hasn’t happened yet.
Has Curiosity made a big discovery?
Has Curiosity made a big discovery?
There has been a lot of buzz the past twenty-four hours about the possibility of a major discovery from Curiosity. However, I agree with Jeffrey Kluger at Time. It is dangerous to pay much attention to these wild speculations, as they are often wrong. Stay calm, and wait for some real information. The most likely possibility is that they have found something very intriguing and exciting, but not Earth-shaking.
Dust devils and radiation in Gale Crater.
Dust devils and radiation in Gale Crater.
Engineers have switched Mars Odyssey to its backup navigation equipment in order to save the failing primary system.
Engineers have switched Mars Odyssey to its backup navigation equipment in order to save the failing primary system.
An older rover releases a picture
Scientists have released a spectacular panorama taken by the now dead rover, Spirit, from its perch at its 2006 winter haven. I have posted a cropped section of that panorama below the fold, with some analysis.
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Curiosity has found evidence showing how Mars lost its atmosphere.
Curiosity has found evidence showing how Mars lost its atmosphere.
More evidence of past glaciers on Mars.
More evidence of past glaciers on Mars.
The first results from Curiosity’s soil samples have come back.
The first results from Curiosity’s soil samples have come back.
“Much of Mars is covered with dust, and we had an incomplete understanding of its mineralogy,” said David Bish, CheMin co-investigator with Indiana University in Bloomington. “We now know it is mineralogically similar to basaltic material, with significant amounts of feldspar, pyroxene and olivine, which was not unexpected. Roughly half the soil is non-crystalline material, such as volcanic glass or products from weathering of the glass. ”
Bish said, “So far, the materials Curiosity has analyzed are consistent with our initial ideas of the deposits in Gale Crater recording a transition through time from a wet to dry environment. The ancient rocks, such as the conglomerates, suggest flowing water, while the minerals in the younger soil are consistent with limited interaction with water.” [emphasis mine]
These results suggest that there has been very little water on the Martian surface for a very long time. They do not, however, mean that there is no water there now.
The marshes of Mexico and their similarities to Gale Crater.
The marshes of Mexico and their similarities to Gale Crater.