A rare full seven-planet alignment will be visible in the early night sky between Feb. 22 and 28. We have the tips you need ...

Cory Green captured footage of Starlink satellites soaring across the night sky towards a US Coast Guard training facility in ...

You may have seen a string of lights in the night sky overnight, but what are these lights and why are they in a straight ...

China launched a new communications satellite into geosynchronous transfer orbit Saturday to replace the aging ChinaSat-10 ...

Viewers from Northeastern Pennsylvania sent pictures and videos spotting Starlink's satellite train Tuesday night.

The sunrise never quite made its grand entrance over the First Coast Thursday morning. Instead, a thick blanket of clouds ...

Japan's SKY Perfect JSAT has announced plans to collaborate with Planet Labs of the US to build an Earth observation ...

"Every centimeter of sea level rise exposes another 2 million people to annual flooding somewhere on our planet." ...

Hundreds of millions of Americans will have the chance in March to see the first total lunar eclipse in nearly three years.

Enjoy the Mars Triangle while it still lasts, for after mid-March it will be no more. We're now just past the midpoint of astronomical winter — that moment marking the midway point between ...

Arizona's dark skies are a haven for astronomers and photographers. Some communities are fighting to keep them that way.