Black holes can get big … really big. But just how big? It's possible they could top out at over a trillion times more massive than the sun.
The full moon of October 2020 also carries the title of the Harvest Moon for those living in the Northern Hemisphere.
Remnants of water once found on the surface of Mars may be hidden in a handful of small lakes below the Red Planet's south pole, and more could exist, according to new research.
Climate archivists have found the coldest day ever in the Northern Hemisphere, set by Greenland in 1991
NASA recently highlighted some collaborations between the Chandra X-ray Observatory and other telescopes.
An epic series of satellite images shows smokes from the California wildfires clashing with hurricanes in the Eastern United States and Gulf Coast.
About 100 million years ago, a gigantic meteorite collided with Australia, creating a 3-mile-wide impact crater.
What might Earth be like crowned with rings? Space and science- fiction illustrator Ron Miller created extraordinary images of how the sky might look if Earth possessed such rings.
A geomagnetic storm that sparked spectacular aurora displays could also have contributed to the sinking of the Titanic.
The OSIRIS-REx probe is scheduled to pull off NASA's first-ever asteroid-sampling operation on Oct. 20, snagging precious dirt and gravel from a carbon-rich space rock called Bennu.
Unusual flashes of gamma rays could reveal that what appear to be giant black holes are actually huge wormholes, a new study finds.
A high-tech pioneer for NASA's moon-orbiting Gateway space station is being readied for liftoff early next year.
If you had a few billion dollars and some of the most talented space scientists and engineers in the world, where would you go?
Scientists have found fresh evidence in lunar rocks showing that the moon was likely formed after a Mars-sized planet crashed into the proto-Earth more than 4 billion years ago.
If there is indeed life on Venus, it may have come from Earth — aboard an asteroid that scooped up microbes high in our skies.
Planets aren't the only things in the solar system with auroras. Comets can have them too, data from the European Space Agency's Rosetta mission has revealed.