Photos: The Search for Water on Mars

Giant Pool of Water Ice at Mars' South Pole

NASA/JPL/ASI/ESA/University of Rome/MOLA Science Team/USGS

This radar map shows the thickness of the south polar layered deposits of Mars (purple represents the thinnest areas and red the thickest). The dark circle is the area poleward of 87 degrees south latitude, where MARSIS can’t collect radar data.

Rivers Might Have Flowed Recently on Mars

NASA/JPL/GSFC/Malin Space Science Systems

In this perspective view looking at the inside rim of Lyot Crater on Mars, a broad lobate debris apron (left) (thought to be a debris-covered glacier) is found amongst water-carved channels. The authors argue that these ice-rich units underwent melting in the relatively high-pressure environment provided by Lyot Crater, the deepest point in the northern hemisphere of Mars.

Flashback: Water on Mars Announced 10 Years Ago


The floor and banks of a Mars gully on the northwest wall of a crater in Terra Sirenium changed between December 2001 and April 2005 due to a distinct light-toned material that flowed down the slope and formed a deposit (top). The same change occurred in a crater in the Centauri Montes region (bottom).

Water Flowed on Mars More Recently Than Thought


Melting glaciers spawned rivers on Mars as recently as several hundred million years ago. This image shows a river that sprang from a past glacier from an unnamed crater in Mars’ middle latitudes. Full Story.

Young Mars Crater Contains Water Ice, Photo Shows

NASA/JPL-Caltech/University of Arizona [Full Story]

At the center of this view of an area of mid-latitude northern Mars, a fresh crater about 6 meters (20 feet) in diameter holds an exposure of bright material, blue in this false-color image.

Oceans of Ancient Mars May Have Sprung From Slow Leaks

G. Di Achille

The ancient oceans or seas thought to have covered ancient Mars 3 billion years ago, as shown in this artist's rendition based on actual topography of Mars from NASA Mars Orbiter Laser Altimeter, may have sprung up through surface cracks.

Mystery Solved: Mars Had Large Oceans

Taylor Perron/UC Berkeley

A view of Mars as it might have appeared more than 2 billion years ago, with an ocean filling the lowland basin that now occupies the north polar region.

New Evidence Suggests Icebergs in Frigid Oceans on Ancient Mars

HiRISE [Full Story]

Chains of crater marks on Mars such as these could have been made by icebergs rolling across ancient Martian ocean floors, researchers suggest.

New Map Bolsters Case for Ancient Ocean on Mars

Wei Luo, Northern Illinois University

This is a global map depicting the dissection density of valley networks on Mars, in relation to the hypothesized northern ocean. Two candidate sea levels are shown: contact 1 with mean elevation at -1,680 meters and contact 2 with mean elevation of -3,760 meters.

Hope for Water on Mars Dims with Sharp New Images


Boulders over northern lowland terrains on Mars.

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