A NASA satellite has spotted frozen "kidney beans" on Mars' sand dunes trapped in place until springtime. Photographing them ...
Every 26 months, the orbits of Earth and Mars allow us a closer look when Mars is at opposition — which will happen on Jan.
It's called an occultation, and it doesn't happen frequently. Here's how to see the dance between the full moon and Mars ...
From our perspective, it will appear that the planet Mars will play a game of "hide and seek" with the Moon on the evening of ...