Image: Artist’s impression of Mars four billion years ago
Size of this preview: 800 × 582 pixels. Other resolutions: 320 × 233 pixels | 6,970 × 5,072 pixels.
Original image (6,970 × 5,072 pixels, file size: 7.36 MB, MIME type: image/jpeg)
Description: This artist’s impression shows how Mars may have looked about four billion years ago. The young planet Mars would have had enough water to cover its entire surface in a liquid layer about 140 metres deep, but it is more likely that the liquid would have pooled to form an ocean occupying almost half of Mars’s northern hemisphere, and in some regions reaching depths greater than 1.6 kilometres.
Author: ESO/M. Kornmesser/N. Risinger (skysurvey.org)
Usage Terms: Creative Commons Attribution-Share Alike 3.0
License: CC-BY-SA-3.0
License Link: http://creativecommons.org/licenses/by-sa/3.0/
Attribution Required?: Yes
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