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Tag Archives: Mars Phoenix
HiRISE: Spring frost on a cold world
Winter on Mars comes with a blanket of carbon dioxide snow. During the spring “thaw,” this snow evaporates into the atmosphere, lingering longest in the shallow depressions such as the troughs of polygon patterned ground. Enhanced color shows the carbon … Continue reading
Posted in Reports
Tagged CO2 frost, High Resolution Imaging Science Experiment, HiRISE, landing sites, Mars Phoenix, Mars Reconnaissance Orbiter, MRO, NASA, Phoenix lander, snow, University of Arizona
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Mars Phoenix: Dust covers landing scars after almost 5 Mars years
A recent view from Mars orbit of the site where NASA’s Phoenix Mars mission landed on far-northern Mars nearly a decade ago shows that dust has covered some marks of the landing. The Phoenix lander itself, plus its back shell … Continue reading
Posted in Reports
Tagged High Resolution Imaging Science Experiment, HiRISE, landing sites, Mars Phoenix, Mars Reconnaissance Orbiter, MRO, NASA, University of Arizona
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Blizzards on Mars strike at night
Mars researchers have long thought that because the water content of the martian atmosphere today is so low, any clouds that form will produce only modest precipitation. For example, in 2008 the Mars Phoenix lander detected falling snow from a … Continue reading
Mars salts must touch ice to make liquid water
In chambers that mimic Mars’ conditions, researchers have shown how small amounts of liquid water could form on the planet despite its below-freezing temperatures. Mars is one of the very few places in the solar system where scientists have seen … Continue reading
Can melting snow make small holes in Mars rocks?
Many rocks on the surface of Mars show pits and small holes. One way such pits can form is when gas-rich lava erupts; the pits, called “vesicles,” form when gas escapes from the lava as it’s cooling. Wind-driven sand can … Continue reading
Posted in Reports
Tagged Mars Exploration Rovers, Mars Pathfinder, Mars Phoenix, Viking landers, water, weathering
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