Solar systems are messy places, but the tools astronomers use to understand these systems can re-create that chaos with surprising beauty.
The small asteroid that broke up over the city of Chelyabinsk, Russia, on Feb. 15, 2013, was a reminder about the importance of monitoring small bodies in space that could pose a threat to Earth.
Elliptical galaxies are dim collections of older stars, so they don't shine as brightly as spiral galaxies but they're the most common type of galaxies in the universe.
Feel like visiting another star system or dimension? You can do this by traveling through a spacetime portal of a black hole. But you better choose carefully. All black holes are not created equal.
Astronomers have spotted 13 more mysterious fast radio bursts, including the second repeating source of these extragalactic light flashes ever discovered.
An instrument aboard the International Space Station has helped reveal how black holes release brilliant flares of X-rays, a new study finds.
The superdense stellar corpses known as white dwarfs solidify into crystal spheres over time, a new study suggests.
A hardware problem has put the main camera onboard the Hubble Space Telescope out of operation, according to a brief statement released by NASA today (Jan. 9).
Citizen scientists unveiled a distant exoplanet that is believed to be roughly twice the size of Earth and located within its star's habitable zone.
The evidence for aliens around one of the weirdest stars in our galaxy — Boyajian's star — is not looking promising.
Bacteria on the International Space Station are evolving and changing in the strange orbital environment. But they don't seem to be any more dangerous to humans.
Researchers have identified a sixth planet orbiting the first star system discovered by the crowdsourcing project Exoplanet Explorers, a system with a unique resonance.
A spooky new series of shots shows asteroid Bennu approaching the camera and receding into the distance during a spacecraft flyby.
When Neil Armstrong was preparing to leave the moon nearly 50 years ago, he allegedly thought the box holding the team's rock samples looked a little empty. So he shoveled in some soil to top it off.
NASA's Transiting Exoplanet Survey Satellite (TESS) has discovered a 'sub-Neptune' planet orbiting the star HD 21749, which lies about 53 light-years from Earth.
Kuiper Belt objects like the one New Horizons just flew past are a dime a dozen, but scientists have detailed spacecraft observations of just three such distant, frozen worlds.