Though it's a cold, dead planet, Mars still has its own natural beauty about it. This image shows us something we'll never ...

Harvard scientists explain how Mars had warm spells billions of years ago, allowing rivers and lakes to exist.

From January to March, the night sky will host a spectacular parade of planets featuring Venus, Mars, Jupiter, Saturn, Uranus ...

The Moon passes 0.3° south of the bright red giant star Antares at 7 P.M. EST. However, the pair isn't visible this evening, as they'll rise in the early-morning sky, so we'll feature them tomorrow.