How many times has NASA discovered water on Mars? For the answer, look in the September 2013 issue, where author Emily Lakdawalla sets the record straight.

Orbiters and landers have returned so many beautiful high-res images, we couldn't include them all in the article. To see more of the photographic evidence for water on Mars, scroll down.

Craters with Ice

Icy Martian Crater
Credit: NASA / JPL-Caltech / University of Arizona
Icy Martian Crater
Credit: NASA / JPL-Caltech / University of Arizona
Icy Martian Crater
Credit: NASA / JPL-Caltech / University of Arizona

Curiosity's Destination

Layers on Mount Sharp
An image from the Mars Reconnaissance Orbiter shows the layered terrain on Mount Sharp, Curiosity's ultimate destination in Gale Crater.
Credit: NASA / JPL-Caltech / University of Arizona
Mount Sharp
Curiosity's view of Mount Sharp. Click image for larger version.
Credit: NASA / JPL-Caltech / MSSS

Glaciers

Hourglass glacier
Credit: ESA / DLR / FU-BERLIN / GERHARD NEUKUM
Lineated valley on Mars
Credit: NASA / JPL-Caltech / University of Arizona

Gullies

Credit: NASA / JPL-Caltech / University of Arizona
Mars gully
Credit: NASA / JPL-Caltech / University of Arizona
Gullies on Hale Crater
NASA / JPL-Caltech / University of Arizona
Water-carved gullies
Credit: NASA / JPL-Caltech / University of Arizona
Gullies in Newton Crater
Credit: NASA / JPL / MSSS
Credit: NASA / JPL / MSSS
Martian gullies
Credit: NASA / JPL / MSSS

Outflow Channels

Ares Vallis
Ares Vallis. Credit: NASA / JPL-Caltech / Arizona State University
Ancient flood on Mars
Remains of an ancient flood on Mars. Credit: NASA / JPL-Caltech / Arizona State University

Phoenix Ice

Ice near Phoenix lander
Ice seen in the Phoenix lander's wheelprint. Credit: NASA / JPL-Caltech / University of Arizona / Texas A&M University

Polygons

Polygons at the pole
Polygons at the pole. Credit: NASA / JPL / MSSS

 

Polygons at the pole
Polygons at the pole. Credit: NASA / JPL / MSSS
Spider polygons
Spider polygons. Credit: NASA / JPL / MSSS

River Valleys

The delta plain of Everswalde
The delta plain of Everswalde. Credit: NASA / JPL / MSSS
Huygens Crater
Huygens Crater. Credit: NASA / JPL-Caltech / Arizona State University

 

Meridiani mapping
Meridiani mapping. Credit: Monica Hoke / Brian Hynek

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water on Mars

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