A "wind event" helps clean off Opportunity's solar panels.
A robot orbiting Mars takes a picture of another robot roaming the surface.
The track of a tiger beetle chasing its prey looks like a giant tangled knot, but research shows that the beetle is just following a simple neurological program.
Many of us in North America were treated to a total lunar eclipse on Monday night, but the Canadians one-upped us (as they do so often) with the addition of a spectacular auroral display.
Nearly half a billion years ago, this was one of the first plants to gain a roothold on land.
NASA's new space-based vegetable garden is heading to the International Space Station today.
When you have supersonic parachutes destined for Mars that are too big to fit into a wind tunnel, the only way to test them is with a helicopter and a rocket-powered sled.
We salute you, whoever had the brilliant idea of strapping cameras onto rockets to get a first-person view of a violent trip to space.
This image has been making the rounds as an "artificial light on Mars," but the reality is probably not that exciting.
Whether or not you voted in NASA's second annual Tournament: Earth, you can still feel good about the image that won, because it's gorgeous.