HiRISE

Beautiful Dunes on Mars, Sculpted by Swirling Winds

This interesting image from the HiRISE camera on the Mars Reconnaissance Orbiter shows a field of fascinating dunes called barchan…

4 weeks ago

This Ice Cliff is One of the Few Places With Exposed Water ice in the Mid-Latitudes on Mars. It’s Probably Tens of Millions of Years old

Because of the orbiters and landers that have studied Mars over the years, scientists have learned that water ice is…

1 month ago

The Tharsis Region of Mars is Peppered With These Strange Pit Craters. Now They’ve Been Found Elsewhere

Pit craters are found on solid bodies throughout our Solar System, including Earth, Venus, the Moon, and Mars. These craters…

2 months ago

This Bizarre Terrain on Mars is Caused by Water Ice and Carbon Dioxide

From orbit, this landscape on Mars looks like a lacy honeycomb or a spider web. But the unusual polygon-shaped features…

4 months ago

This Crater on Mars is Just a Couple of Years Old

Changes are always taking place on Mars, from factors like seasonal variations and wind. But there’s one other aspect that…

5 months ago

This is a Dust Avalanche on Mars

For decades, scientists have observed dark landslides called slope streaks on Mars. First seen by the Viking orbiters in the…

5 months ago

Here’s Something Rare: a Martian Crater That isn’t a Circle. What Happened?

Most impact craters are usually circular and fairly symmetric, but not all. This odd-shaped crater on Mars is obviously an…

6 months ago

These are Star Dunes on Mars, Formed When the Wind Comes From Many Different Directions

Missions to Mars are expensive, even orbiters. They're there to do science, not take pretty pictures. But sometimes Mars' beauty…

6 months ago

Mars Orbiter Captures Images of China’s Rover From Space

China’s Tianwen-1 lander and Zhurong rover touched down on the Martian plain Utopia Planitia on May 14, 2021 after spending…

7 months ago

It’s Springtime on Mars, and the Dunes are Defrosting

Nothing says springtime on Mars like defrosting dunes. (more…)

7 months ago