The greatest hits from Mars 最高点击率来自火星

雪儿 · 发表于: 2011-5-22 14:26:41

AURA / STSCI / NASA

The face of Mars

The Hubble Space Telescope focuses on the full disk of Mars, with a head-on view of a dark feature known as Syrtis Major. Hubble astronomers could make out features as small as 12 miles wide.

雪儿 · 发表于: 2011-5-22 14:27:06

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NASA

Red, white and blue planet

Two decades before Pathfinder, the Viking 1 lander sent back America's first pictures from the Martian surface. This 1976 picture shows off the lander's U.S. flag and a Bicentennial logo as well as the planet's landscape.

雪儿 · 发表于: 2011-5-22 14:27:25

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NASA

Grand canyon

This is a composite of Viking orbiter images that shows the Valles Marineris canyon system. The entire system measures more than 1,875 miles long and has an average depth of 5 miles.

雪儿 · 发表于: 2011-5-22 14:27:45

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NASA

Red rover

A mosaic of eight pictures shows the Pathfinder probe's Sojourner rover just after it rolled off its ramp. At lower right you can see one of the airbags that cushioned Pathfinder's landing on July 4, 1997.

雪儿 · 发表于: 2011-5-22 14:28:07

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NASA

Twin Peaks at their peak

The Pathfinder probe focuses on Twin Peaks, two hills of modest height on the Martian horizon. Each peak rises about 100 feet above the surrounding rock-littered terrain.

雪儿 · 发表于: 2011-5-22 14:28:43

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NASA / JPL

Blue horizon

A Martian sunset reverses the colors you'd expect on Earth: Most of the sky is colored by reddish dust hanging in the atmosphere, but the scattering of light creates a blue halo around the sun itself.

雪儿 · 发表于: 2011-5-22 14:28:58

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NASA

Two-faced Mars

The image at left, captured by a Viking orbiter in the 1970s, sparked speculation that Martians had constructed a facelike monument peering into space. But the sharper image at right, sent back in 1998 by Mars Global Surveyor, spoiled the effect.

雪儿 · 发表于: 2011-5-22 14:29:19

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MSSS / NASA

Put on a happy face

The "Happy Face Crater" - officially named Galle Crater - puts a humorous spin on the "Face on Mars" controversy. This image was provided by the Mars Global Surveyor orbiter.

雪儿 · 发表于: 2011-5-22 14:31:41

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MSSS / NASA

A monster of a mountain

Mars' highest mountain, an inactive volcano dubbed Olympus Mons, rises as high as three Everests and covers roughly the same area as the state of Arizona. Mars Global Surveyor took this wide-angle view.

雪儿 · 发表于: 2011-5-22 14:31:57

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Pockmarked moon

Mars Global Surveyor snapped this picture of Phobos, the larger of Mars' two potato-shaped moons. Phobos' average width is just 14 miles. The image highlights Phobos' 6-mile-wide Stickney Crater.

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[2011年] The greatest hits from Mars 最高点击率来自火星

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