The perfect circle surrounding a galaxy cluster in a new Hubble Space Telescope image is a visual indicator of the huge masses that are bending time and space in that region.
Dark matter has led scientists on a bit of a wild goose chase lately.
Stargazers are going to appreciate these April showers.
A paper published last week takes a look at the second rock from the Sun -- Venus -- as well as its atmosphere.
Famed British scientist Stephen Hawking was laid to rest Saturday during a private funeral in Cambridge attended by some 500 people.
Scientists have been stunned by the discovery of a so-called ‘ghost galaxy’ that appears to contain virtually no dark matter, a key building block for galaxies.
Stargazers, get your binoculars ready: a blue moon will grace the night's sky this weekend, and the show is expected to be spectacular.
NASA's Kepler space telescope captured a dying star's final moments, revealing a violent explosion unlike any other supernova.
Stephen Hawking died March 14, leaving behind a massive legacy of work as an astrophysicist, science communicator, activist, and figure of pop culture admiration.
Astronomers are hunting down the cause of a nearby galaxy's "arrested development" with the help of NASA's Hubble Space Telescope.
There's a lot we still don't know about black holes, but these light-gobbling behemoths would be even more mysterious if Stephen Hawking hadn't plumbed their inky depths.
A mysterious cosmic signal radiating from the center of our Milky Way galaxy is actually triggered by ancient stars, rather than dark matter, according to a new study.
New work helps to codify the cause and properties of "Steve," an aurora-like phenomenon documented by citizen scientists as it streaked across the sky in western Canada.
Scientists have discovered 15 new planets, including a “super-Earth” that may have liquid water on its surface.
Some of the most monstrous black holes in the universe are growing faster than their host galaxies, new research suggests.
Enormous disks of stars or debris can operate under the same rules as subatomic particles, changing based on the Schrodinger equation, which physicists use to model quantum-mechanical systems.
The superdense corpse of a once-massive star roared back to life, briefly, by feasting on its dying companion, a new study suggests.
It’s a controversial idea. But an enticing one. A new study has once again tackled the implications of a black hole’s event horizon — the point beyond which not even light can escape its gravitational pull.
Adam Hadhazy, writer and editor for The Kavli Foundation, contributed this article to Space.com's
Stargazers, get your binoculars ready: a string of bright planets, called a "Planet Parade," will grace the night's sky this week, and the show is expected to last several days.