File:An artist’s impression of Mars four billion years ago.jpg

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English: 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.
Français : Cette vue d'artiste montre ce à quoi devait ressembler Mars voici quatre milliards d'années. La toute jeune planète devait renfermer suffisamment d'eau liquide pour que l'intégralité de sa surface en soit couverte, sur une hauteur d’environ 140 mètres. Il semble plus probable toutefois que l'eau liquide se soit constituée en un océan occupant près de la moitié de l'hémisphère nord de la planète. En certaines régions, la profondeur de cet océan pouvait dépasser 1,6 kilomètre.
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Source https://www.eso.org/public/images/eso1509a/
Author European Southern Observatory / M. Kornmesser
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(Reusing this file)		 https://www.eso.org/public/outreach/copyright/

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w:en:Creative Commons
attribution share alike
This file is licensed under the Creative Commons Attribution-Share Alike 4.0 International license.
You are free:
  • to share – to copy, distribute and transmit the work
  • to remix – to adapt the work
Under the following conditions:
  • attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
  • share alike – If you remix, transform, or build upon the material, you must distribute your contributions under the same or compatible license as the original.
This file, which was originally posted to https://www.eso.org/public/images/eso1509a/, was reviewed on 29 December 2018 by reviewer Yann, who confirmed that it was available there under the stated license on that date.

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current18:02, 30 November 2015Thumbnail for version as of 18:02, 30 November 20157,683 × 4,717 (5.1 MB)AdamHadhazy (talk | contribs)User created page with UploadWizard

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