Finding:

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   Mars

   Based on orbital observations and the examination of the Martian meteorite collection, the surface of Mars appears to be composed primarily of basalt.
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   Geology of Mars

   The surface of Mars is thought to be primarily composed of basalt, based upon the observed lava flows from volcanos, the Martian meteorite collection, and data from landers and orbital observations.
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   Mars landing

   A Mars landing is when a spacecraft lands on the surface of Mars. ... New temperature data and closeup images of the Martian moon Phobos show its surface is composed of powdery material at least 1 metre (3 feet) thick, caused by millions of years of meteoroid impacts.
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   Geology of solar terrestrial planets

   The surface of Mars is thought to be primarily composed of basalt, based upon the observed lava flows from volcanos, the Martian meteorite collection, and data from landers and orbital observations.
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   Life on Mars

   It is composed mostly of pyroxene and thought to have undergone preterrestrial aqueous alteration for several centuries. ... In June 2000, evidence for water currently under the surface of Mars was discovered in the form of flood-like gullies.
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   Climate of Mars

   The Martian atmosphere is composed mainly of carbon dioxide and has a mean surface pressure of about 600 pascals, much lower than the Earth's 101,000 Pa. ... The surface of Mars has a very low thermal inertia, which means it heats quickly when the sun shines on it.
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   Colonization of Mars

   There are no standing bodies of liquid water on the surface of Mars. ... The highest altitude reached by a manned balloon ascent, a record set in May 1961, was 34,668 meters (113,740 feet).
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   Mars Reconnaissance Orbiter

   Diagram of instrumentation aboard MRO ... An artist's concept of MRO using SHARAD to "look" under the surface of Mars
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   Mars Direct

   The MHU also includes a small pressurized rover that is stored in the lower deck area and assembled on the surface of Mars.
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    Phoenix (spacecraft)

    MRO image of Phoenix on the surface of Mars. ... On June 19, 2008, NASA announced that dice-sized clumps of bright material in the "Dodo-Goldilocks" trench dug by the robotic arm had vaporized over the course of four days, strongly implying that they were composed of water ice which sublimated following exposure.

Explore the following pages on Powerset:

• Mars,
• Geology of Mars,
• Mars landing,
• Geology of solar terrestrial planets,
• Life on Mars,
• Climate of Mars,
• Colonization of Mars,
• Mars Reconnaissance Orbiter,
• Mars Direct,
• Phoenix (spacecraft)