There are a million space rocks nearby. Astronomers have only mapped about 9,700 of them.
When it comes to saving the Earth from threatening astroids, Bruce Willis can only do so much.
In order to reach Mars, our astronauts may have to stop by a lassoed astroid first.
While there's still no evidence that life evolved on Mars, we now know that it at least could have.
Why you should thank NASA for rainy day road safety on this Moment of Science.
NASA's Curiosity rover has found evidence for life-supporting conditions on ancient Mars.
Pluto was demoted to dwarf planet status, but it still has moons. This new moon, called P5 for now, is the fifth moon found orbiting Pluto.
The Mars Science Laboratory mission is sending its largest rover to the red planet. That rover's name is Curiosity.