In a first-of-its-kind mission, Katalyst Space, a startup, is attempting to rescue NASA's Swift Space Observatory using the ...

Astronomers using the Chandra X-ray Telescope have discovered an "exhaust vent attached to a “chimney” of hot gas blowing ...

Telescopes 4 inches or less in diameter are portable, easy to use, and great beginner instruments. Here, I’ll walk through ...

Days before America's 250th birthday, columnist Suzie Dills shares a peek at how early Americans used planets and ...

Somewhere out there, a planet roughly the size of Earth may be orbiting a distant star in conditions that could support life.

Here’s how to see the year’s most-intense meteor shower, a blood-red lunar eclipse and Saturn’s refreshed rings this summer.

Achieving the blackest of blacks has been one of humanity's enduring challenges. It is a frontier that unites modern ...

Fireworks may not be the only light show this July Fourth weekend. Here's how you can see the Milky Way this month across the ...

Giant mirrors in space have been a staple of science fiction for decades. But so far, there's been very little work looking ...

Fireworks may not be the only light show this July Fourth weekend (and beyond.) The darkest Florida skies may deliver ...

A few years ago, the main enemies of astronomers were clouds, urban glare and bad weather. Today, a new problem has been ...