With its massive iron core and ultrathin crust, Mercury is something of an oddball in the solar system.
Omega Centauri may be the brightest among the dense collections of stars known as globular clusters, but it probably doesn’t contain many habitable worlds, a new study suggests.
The Martian surface is crisscrossed with what looks like the scars of running water cut into its dusty dry surface.
An elusive type of black hole has been spotted as it shreds and consumes a nearby star.
DENVER — Small but rowdy space rocks pushing and jostling one another may have created the unusual orbits some astronomers cite as the signature of the hypothesized ” Planet Nine,” a new study suggests.
New research reveals that some black hole collisions may cascade, with the dense objects crashing into one another to create even more-massive black holes.
On April 30, after more than 20 years in space, NASA’s Rossi X-ray Timing Explorer ( RXTE ) satellite re-entered and burned up in Earth’s atmosphere.
Comet 67P/Churyumov-Gerasimenko may have survived multiple impacts on the way to forming its peanut shape.
Mars may have gained its two tiny moons after an asteroid-size object slammed into the surface of the Red Planet.
While telescopes in space can scan the sky without interference from Earth’s clouds, they still run into problems from hazes on other planets.