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图片 | 2018年 7月 25日 星期三 22:02 BJT

The surface of Mars

The base of Mars' Mount Sharp.

REUTERS/NASA

The base of Mars' Mount Sharp. REUTERS/NASA

The base of Mars' Mount Sharp. REUTERS/NASA
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A view of Ophir Chasma on the northern portion of the vast Mars canyon system, Vallles Marineris, taken by NASA's Mars Reconnaissance Orbiter.


REUTERS/NASA/JPL/University of Arizona

A view of Ophir Chasma on the northern portion of the vast Mars canyon system, Vallles Marineris, taken by NASmore

A view of Ophir Chasma on the northern portion of the vast Mars canyon system, Vallles Marineris, taken by NASA's Mars Reconnaissance Orbiter. REUTERS/NASA/JPL/University of Arizona
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2 / 19
Nili Patera, one of the most active dune fields on the planet Mars.


REUTERS/NASA/JPL-Caltech/Univ. of Arizona

Nili Patera, one of the most active dune fields on the planet Mars. REUTERS/NASA/JPL-Caltech/Univ. of Arizonmore

Nili Patera, one of the most active dune fields on the planet Mars. REUTERS/NASA/JPL-Caltech/Univ. of Arizona
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Viscous, lobate flow features commonly found at the bases of slopes in the mid-latitudes of Mars, often associated with gullies. These are bound by ridges that resemble terrestrial moraines, suggesting that these deposits are ice-rich, or may have been ice-rich in the past. 

NASA/JPL-Caltech/Univ. of Arizona

Viscous, lobate flow features commonly found at the bases of slopes in the mid-latitudes of Mars, often associmore

Viscous, lobate flow features commonly found at the bases of slopes in the mid-latitudes of Mars, often associated with gullies. These are bound by ridges that resemble terrestrial moraines, suggesting that these deposits are ice-rich, or may have been ice-rich in the past. NASA/JPL-Caltech/Univ. of Arizona
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Rough spherical features in an area called Yellowknife Bay. These features are interpreted as concretions, implying they formed in water that percolated through pores in the sediment. Spherical concretions have previously been discovered in other rocks on Mars.


REUTERS/NASA/JPL-Caltech/MSSS

Rough spherical features in an area called Yellowknife Bay. These features are interpreted as concretions, impmore

Rough spherical features in an area called Yellowknife Bay. These features are interpreted as concretions, implying they formed in water that percolated through pores in the sediment. Spherical concretions have previously been discovered in other rocks on Mars. REUTERS/NASA/JPL-Caltech/MSSS
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An impact crater on Mars is seen in an image taken by Orbiter.


REUTERS/NASA/JPL-Caltech/Univ. of Arizona

An impact crater on Mars is seen in an image taken by Orbiter. REUTERS/NASA/JPL-Caltech/Univ. of Arizona

An impact crater on Mars is seen in an image taken by Orbiter. REUTERS/NASA/JPL-Caltech/Univ. of Arizona
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A rock outcrop called Link pops out from a Martian surface. Rounded gravel fragments, or clasts, up to a couple inches in size are in a matrix of white material. The outcrop characteristics are consistent with a sedimentary conglomerate, or a rock that was formed by the deposition of water and is composed of many smaller rounded rocks cemented together. Scientists enhanced the color in this version to show the Martian scene as it would appear under the lighting conditions we have on Earth.

REUTERS/NASA/JPL-Caltech/MSSS

A rock outcrop called Link pops out from a Martian surface. Rounded gravel fragments, or clasts, up to a couplmore

A rock outcrop called Link pops out from a Martian surface. Rounded gravel fragments, or clasts, up to a couple inches in size are in a matrix of white material. The outcrop characteristics are consistent with a sedimentary conglomerate, or a rock that was formed by the deposition of water and is composed of many smaller rounded rocks cemented together. Scientists enhanced the color in this version to show the Martian scene as it would appear under the lighting conditions we have on Earth. REUTERS/NASA/JPL-Caltech/MSSS
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The northern-most sand dunes are seen as they begin to emerge from their winter cover of seasonal carbon dioxide (dry) ice.


REUTERS/NASA/JPL-Caltech/Univ. of Arizona

The northern-most sand dunes are seen as they begin to emerge from their winter cover of seasonal carbon dioximore

The northern-most sand dunes are seen as they begin to emerge from their winter cover of seasonal carbon dioxide (dry) ice. REUTERS/NASA/JPL-Caltech/Univ. of Arizona
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A location on Mars associated with the best-selling novel and Hollywood movie, "The Martian" This area is in the Acidalia Planitia region and in the novel and the movie, it is the landing site of a crewed mission named Ares 3.



REUTERS/NASA/JPL-Caltech/Univ. of Arizona

A location on Mars associated with the best-selling novel and Hollywood movie, "The Martian" This area is in tmore

A location on Mars associated with the best-selling novel and Hollywood movie, "The Martian" This area is in the Acidalia Planitia region and in the novel and the movie, it is the landing site of a crewed mission named Ares 3. REUTERS/NASA/JPL-Caltech/Univ. of Arizona
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Portions of the Martian surface showing many channels from 1 meter to 10 meters wide on a scarp in the Hellas impact basin.


REUTERS/NASA/JPL-Caltech/Univ. of Arizona

Portions of the Martian surface showing many channels from 1 meter to 10 meters wide on a scarp in the Hellas more

Portions of the Martian surface showing many channels from 1 meter to 10 meters wide on a scarp in the Hellas impact basin. REUTERS/NASA/JPL-Caltech/Univ. of Arizona
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10 / 19
A view of the Noctis Labyrinthus region of Mars, perched high on the Tharsis rise in the upper reaches of the Valles Marineris canyon system.

EUTERS/NASA/JPL/University of Arizona

A view of the Noctis Labyrinthus region of Mars, perched high on the Tharsis rise in the upper reaches of the more

A view of the Noctis Labyrinthus region of Mars, perched high on the Tharsis rise in the upper reaches of the Valles Marineris canyon system. EUTERS/NASA/JPL/University of Arizona
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The surface of the planet Mars inside Gale Crater.

REUTERS/NASA

The surface of the planet Mars inside Gale Crater. REUTERS/NASA

The surface of the planet Mars inside Gale Crater. REUTERS/NASA
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Curiosity appears as a bluish dot near the lower right corner of this enhanced-color view from Orbiter taken June 2013.


REUTERS/NASA/JPL-Caltech/Univ. of Arizona

Curiosity appears as a bluish dot near the lower right corner of this enhanced-color view from Orbiter taken Jmore

Curiosity appears as a bluish dot near the lower right corner of this enhanced-color view from Orbiter taken June 2013. REUTERS/NASA/JPL-Caltech/Univ. of Arizona
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Part of the wall of Gale Crater. Here, a network of valleys believed to have formed by water erosion enters Gale Crater from the outside.


REUTERS/NASA/JPL-Caltech/MSSS

Part of the wall of Gale Crater. Here, a network of valleys believed to have formed by water erosion enters Gamore

Part of the wall of Gale Crater. Here, a network of valleys believed to have formed by water erosion enters Gale Crater from the outside. REUTERS/NASA/JPL-Caltech/MSSS
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Inclined layering known as cross-bedding in an outcrop called Shaler on a scale of a few tenths of a meter.


REUTERS/NASA/JPL-Caltech/MSSS

Inclined layering known as cross-bedding in an outcrop called Shaler on a scale of a few tenths of a meter. more

Inclined layering known as cross-bedding in an outcrop called Shaler on a scale of a few tenths of a meter. REUTERS/NASA/JPL-Caltech/MSSS
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Two trenches dug by Phoenix's Robotic Arm.

REUTERS/NASA/JPL-Caltech/University of Arizona

Two trenches dug by Phoenix's Robotic Arm. REUTERS/NASA/JPL-Caltech/University of Arizona

Two trenches dug by Phoenix's Robotic Arm. REUTERS/NASA/JPL-Caltech/University of Arizona
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Mars' Victoria Crater at Meridiani Planum.


REUTERS/NASA/JPL/Caltech

Mars' Victoria Crater at Meridiani Planum. REUTERS/NASA/JPL/Caltech

Mars' Victoria Crater at Meridiani Planum. REUTERS/NASA/JPL/Caltech
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An iron meteorite on Mars in an image taken by the Mars Exploration Rover Opportunity.


REUTERS/NASA/JPL/Cornell

An iron meteorite on Mars in an image taken by the Mars Exploration Rover Opportunity. REUTERS/NASA/JPL/Cornmore

An iron meteorite on Mars in an image taken by the Mars Exploration Rover Opportunity. REUTERS/NASA/JPL/Cornell
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This image, cropped from a larger panoramic image mosaic taken by the Mars Exploration Rover Spirit panoramic camera shows the rover's destination toward the hills nicknamed the Columbia Hills.

REUTERS/NASA/JPLCornell

This image, cropped from a larger panoramic image mosaic taken by the Mars Exploration Rover Spirit panoramic more

This image, cropped from a larger panoramic image mosaic taken by the Mars Exploration Rover Spirit panoramic camera shows the rover's destination toward the hills nicknamed the Columbia Hills. REUTERS/NASA/JPLCornell
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