Mars Express orbiter captures a slightly elliptical crater measuring roughly 12 miles (20 kilometres) east to wes ...

This striking astronaut photo shows off an "eye-catching" impact crater in the Sahara Desert. The oculus-like structure is surrounded by migrating sand dunes that are capable of traveling more than ...

On the ground, its rings are hard to appreciate; dunes, heat haze, and uneven terrain all conspire to hide the full shape.

Deserts exist on each continent and cover more than 20% of the Earth’s land area. Any place that receives less than 10 inches of rain per year is a desert. Deserts are home to a billion people as of ...

The study of impact crater geology and shock metamorphism offers a vital window into the extreme conditions that have shaped planetary surfaces. Impact events, whether from solitary projectiles or ...

Scientists are uncovering signs that Earth has been hit by powerful cosmic blasts that leave little trace on the surface yet ...

Aaron J. Cavosie receives or has received funding from the Australian Research Council, the US National Science Foundation, and NASA. Alec Brenner does not work for, consult, own shares in or receive ...

Forbes contributors publish independent expert analyses and insights. David Bressan is a geologist who covers curiosities about Earth. The Silverpit Crater is situated in the Silverpit Basin in the ...

Why it's incredible: Evidence suggests it could be the greatest known impact crater on Earth. The Wilkes Land crater is a hole in the bedrock beneath East Antarctica's ice sheet measuring 315 miles ...

This article was originally published at The Conversation. The publication contributed the article to Space.com's Expert Voices: Op-Ed & Insights. Ever been late because you misread a clock? Sometimes ...