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Unformatted text preview: it, analyze dust, rock!
Spirit did not revive after Mars winter in 2010!
Opportunity still going in February 2013 !
– (much longer than expected)!
• http://marsrovers.jpl.nasa.gov/home/index.html! Panorama from Spirit! Looking back at tracks. Taken May 2004! More evidence of water!
Picture from Opportunity
Beads of hematite!
Eroding out of rock!
Usually form in liquid
This implies standing
water at this site.! Mars Reconnaissance Orbiter!
• Orbiter with variety of instruments!
– Launched Aug. 2005, arrived Mar. 2006!
– Detailed minerals, subsurface water!
– Resolution down to 1 m!
– Evidence of ﬂuid (gas or liquid) along
cracks originally underground! Phoenix Lander!
• Phoenix (NASA)!
– Launch Aug. 2007, landed near North pole
May 2008, Last contact in Nov. 2008!
• Winter, less sunlight, loss of solar power!
• Dug trenches, did chemical analysis!
• Some problems, soil was sticky!
• Clearly there was ice in the soil! Phoenix sees frost on Mars! Curiosity Rover!
• Most ambitious yet (landed 2012)!
– In Gale Crater!
– Drill, sampling arm, many analysis tools!
– So far, has focused on drilling into rocks!
– Expect more news! Artist’s Conception of Curiosity on Mars! Meteorites from Mars!
• Easy way to get pieces of Mars to study!
Asteroid impact on Mars knocks off pieces!
Some land on Earth!
Antarctic ice is good place to ﬁnd meteorites!
http://www2.jpl.nasa.gov/snc/! Los Angeles 2002! Martian meteorite found in LA county in 1999!
245 gm! AlH 84001! !
1.9 kg !(softball-sized) !found in 1984 in Allan Hills Region (AlH)!
A few meteorites (~12) are so similar to Mars !
Minerals & isotope ratios, that they are assumed to come from Mars!
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- Spring '08