Every constellation has something within its borders worth tracking down, if you just look hard enough. Here are five to ...

This list of commonly confused terms in astronomy will help you better understand the cosmos and the common phenomena we see ...

As the ISS ages and is eventually decommissioned, private companies may operate the orbital platforms of the future.

Rainbows may be a trick of the eye, but they’re also based in fascinating optical physics. Here's how they work and why we ...

NASA has identified nine locations near the Moon’s south pole for the first crewed lunar landing since Apollo 17.

A six-mile-thick crust of methane trapped in water ice could explain many of the saturnian moon's weird properties ...

The closest star to Earth is also the best studied, but only recently have we truly begun to uncover its secrets.

A century ago this month, a brash astronomer leaked a discovery that opened our view to the cosmic distance scale and the ...

Astronauts have voted from the space station since 1997 and have cast ballots in nearly every U.S. presidential election ...

Mars’ features are starting to become visible, Mercury appears in the evening sky, and the Trifid Nebula glows in the sky ...

A third, tenuously held companion to the known binary V404 Cygni may signal that at least some black holes form "gently." ...

When the historic observatory was shuttered by the University of Chicago, a community organization helped to revitalize it.