Earth is home to some truly bizarre and breathtaking landscapes — here are 20 that look straight out of an alien world.

On January 16 Mars shone at its brightest until 2027 as it was in opposition, which means it was positioned directly opposite ...

A nearby star ... And red dwarf stars like Wolf 359 are known to produce a lot of radiation — often in the form of flares and other lash-outs. Because of the small size of such stars, planets ...

A U.S. scientist searching for a civilization across 7 Earth clones circling the red dwarf star TRAPPIST-1 says its own alien ...

The number of planets that orbit the sun depends on what you mean by “planet,” and that’s not so easy to define ...

Baker said that there are other astronomical events that may be more interesting than the parade of planets. Baker said Mars ...

Six planets are parading across the sky, appearing as some of the night's brightest stars. A few easy tips can help you ...

Welcome to this month’s edition of “What’s up in the sky?” February has a nice lineup of planets and some eye-catching ...

What’s that bright star ... the red planet appears to give off a golden glow for the rest of the night as it moves into the southern sky. Why is Mars so bright this week? Does it really look ...

Stargazers will be treated to a rare seven-planet alignment in February. This is what scientists hope to learn.