The constellation of four satellites can take both narrow- and wide-field images of the Sun to study its corona and solar ...

The photo of a 9.5-light-year-long cloud within the Eagle Nebula celebrates the space telescope’s upcoming 35th birthday.

Enjoy dark skies for evening observing, then catch a meteor shower and a planetary conjunction in the morning sky this week.

Fresh data from the James Webb Space Telescope provide more evidence for what some consider a biosignature — but debate is ...

The company is developing a commercial replacement for the ISS, currently planned to be retired at the end of the decade.

There’s real joy in sharing a telescope with others and observing in a crowd. Here's how you can find a star party near you ...

In a preliminary budget proposal, the agency’s science programs would see a 50 percent reduction, with a 20 percent cut to ...

We’ve wondered what powered the Sun for centuries. Early guesses included meteor showers, chemical combustion, and ...

Catch two transits of Io, spot sparkling star clusters, and view Mars at aphelion while the April Full Moon lights the sky ...

On the morning of April 21, you’ll be able to see Venus, Mercury, and Saturn low in the east — all without a telescope.

These icy bodies contain organic molecules — and don’t fall into any known category of celestial object we’ve seen before.

These NASA missions were not only a steppingstone to the Moon, but influenced many aspects of the way humans still travel ...