The moon makes for an excellent guide to see Mars in the night sky tonight. As the sun sets this evening (Feb. 9), the moon ...

As of today Mars will reverse its apparent west-to-east movement in the night sky and begin moving from east-to-west against the background stars. This is called “retrograde motion” and it ...

Is there really life on Mars? Was there once cellular material on the red planet? Scientists have been studying these questions for a long time, and now they have some new information that may ...

This story was updated to correct inaccurate position of Mars and Earth. Mars will appear its biggest and brightest this month when it reaches its closest position to Earth while simultaneously ...

On Monday, Mars will look reddish and bright as the ... celestial object passes directly in front of another, hiding the background object from view," NASA says in a skywatching guide.

"An occultation is when one celestial object passes directly in front of another, hiding the background object from view," NASA says in a skywatching guide. The timing of Mars' disappearing act ...