Marspedia - User contributions [en]

Mars Probe Program

2007-07-20T21:12:21Z

Number04: New page: The first successful objects to land on the surface were two Soviet probes, Mars 2 and Mars 3 from the Mars probe program, launched in 1971, but both lost contact within seconds of landing...

The first successful objects to land on the surface were two Soviet probes, Mars 2 and Mars 3 from the Mars probe program, launched in 1971, but both lost contact within seconds of landing.

[[category:Landers]]

Phobos

2007-07-20T20:59:49Z

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[[Image:Phobos_MGS.jpg|thumb|200px|right|A [[Mars Global Surveyor]] image of the moon Phobos.]]

Phobos is a dark body that appears to be composed of carbonaceous surface materials. Phobos' density is too low to be pure rock, however, and it is known to have significant porosity. These results led to the suggestion that Phobos might contain a substantial reservoir of ice, but spectral observations have ruled out this hypothesis.

The Soviet spacecraft Phobos 2 reported a faint but steady release of dust particles from Phobos, but the spacecraft failed before it could determine the nature of the material. Recent images from Mars Global Surveyor indicate that Phobos is covered with a layer of fine-grained regolith at least 100 metres thick; it is believed to have been created by impacts from other bodies, but it is not known how the material stuck to an object with almost no gravity.

Phobos is highly nonspherical, with dimensions of 27 × 21.6 × 18.8 km. Because of its shape alone, the gravity on its surface varies by about 210%; the tidal forces raised by Mars more than double this variation (to about 450%) because they compensate for a little more than half of Phobos' gravity at its sub- and anti-Mars poles.

[[Category:Natural_Satellites]]

User:Number04

2007-07-17T17:04:47Z

Number04:

An amateur Mars fan.

User:Number04

2007-07-17T17:03:42Z

Number04: New page: An armature Mars fan.

An armature Mars fan.

EVA Suit

2007-07-17T17:00:18Z

Number04: New page: During a manned mission to Mars, human comfort will play a big role in the mission’s success. The current bulky space suit in use weighs in at 300 pounds and is impractical for use in lo...

During a manned mission to Mars, human comfort will play a big role in the mission’s success. The current bulky space suit in use weighs in at 300 pounds and is impractical for use in low gravity environments.

Researchers at MIT are working on a spandex and nylon BioSuit to be used in such a situation. The torso would be pressurized to about 30 kPa while the limbs would be sheathed in thinner material allowing for increased dexterity and decreased weight from the current model.

[[category:Human Missions]]

Deimos

2007-07-12T19:12:29Z

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[[Image:Deimos.gif|thumb|200px|right|A [[Mars Global Surveyor]] image of the moon Deimos.]]

Deimos is the smaller and outer moon of Mars (the inner moon is Phobos.) Demios is composed of rock rich in carbonaceous material. Although the surface is noticeably smoother than Phobos it is still cratered. The two largest craters each measure about 3 kilometers in diameter.

The name Deimos (Dread) comes from Book XV of the Iliad. The name was suggested by Henry Madan (1838–1901)

[[Category:Natural_Satellites]]