Our brains trick us into seeing images of craters as both concave and convex. Get the Popular Science daily newsletter💡 Breakthroughs, discoveries, and DIY tips sent every weekday. Search for: ...

Listen to the sound of space rocks crashing into Mars 00:23. NASA's latest discovery on Mars may just be the cutest one yet. Last week, the operator of one of the space agency's satellites shared ...

Scientists found an unexpected discovery on the surface of Mars: a formation resembling the face of a bear. A camera on NASA's Mars Reconnaissance Orbiter snapped a photo of the formation on Dec. 12.

But until this journey onto the crater rim, the rover hadn’t handled such a combination of steep, tilted and slippery. And Mars is essentially one hazard after another. The mantra of the team ...

An excellent example can be seen in the "Happy Face Crater," a crater found at the planet's frosty south polar region. Sublimating frost has changed the look of the crater -- and the smiling face ...

About 66 million years ago, Earth was smacked in the face by an asteroid. ... The exact age of this putative crater, named Nadir by the study’s authors, is yet to be determined.

At Crater Lake National Park, thousands of people hike down to the lake every year to swim in the shallows and dive from a 35-foot cliff face into the clear blue depths.They do this despite an ...