|
|
 |
US-SPACE-MARS-GEOLOGY
This NASA handout illustration obtained December 8, 2014 depicts a lake of water partially filling Mars' Gale Crater, receiving runoff from snow melting on the crater's northern rim. Evidence of ancient streams, deltas and lakes that NASA's Curiosity Mars rover mission has found in the patterns of sedimentary deposits in Gale Crater suggests the crater held a lake such as this more than three billion years ago, filling and drying in multiple cycles over tens of millions of years. Gale Crater is 96 miles (154 kilometers) in diameter. This view is looking toward the southeast. The land surface in this illustration is the area's modern shape. Three billion years ago, the rim would have been higher and less eroded. A large layered mountain, Mount Sharp, now stands in the middle of Gale Crater. Accumulation of sediments in lakes, deltas, streams and wind-blown deposits is proposed to have formed the layers making up the lower portion of the mountain. When the crater first held a lake, it might have had central peak, much smaller than Mount Sharp, formed as a rebound from the impact that excavated the crater. Such a peak might have appeared as an island in the lake. == RESTRICTED TO EDITORIAL USE / MANDATORY CREDIT: "AFP PHOTO / HANDOUT /NASA/JPL-Caltech/ESA/DLR/FU Berlin/MSSS "/ NO MARKETING / NO ADVERTISING CAMPAIGNS / NO A LA CARTE SALES / DISTRIBUTED AS A SERVICE TO CLIENTS ==
|
|
|
|
Detalii fotografie |
| Loc: |
|
Mars, SPACE |
|
| Sursa: |
|
AFP / Mediafax Foto |
|
| Fotograf: |
|
HANDOUT |
|
| Data: |
|
8 Decembrie 2014 |
|
| Dimensiuni: |
|
2560 x 1600 (423.91 KB) |
|
|
|
|
|
|