Black holes so big we don't know how they form could be hiding in the universe By Paul Sutter 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.
We now know exactly how much radiation astronauts will face on the moon By Mike Wall We finally know what kind of radiation environment future moonwalkers will be stepping into.
Harvest Moon 2020: When and how to see October's full moon By Jesse Emspak The full moon of October 2020 also carries the title of the Harvest Moon for those living in the Northern Hemisphere.
On Mars, 4 supersalty lakes may be hiding under the south pole ice cap By Charles Q. Choi 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 scientists uncover new record-low temperature in Greenland By Brandon Specktor Climate archivists have found the coldest day ever in the Northern Hemisphere, set by Greenland in 1991
Stunning images from Hubble, Chandra, and more reveal value of space telescope teamwork By Elizabeth Howell NASA recently highlighted some collaborations between the Chandra X-ray Observatory and other telescopes.
Climate fires and hurricanes collide in this shocking NASA satellite image By Brandon Specktor An epic series of satellite images shows smokes from the California wildfires clashing with hurricanes in the Eastern United States and Gulf Coast.
Gold miners discover 100 million-year-old meteorite crater Down Under By Laura Geggel About 100 million years ago, a gigantic meteorite collided with Australia, creating a 3-mile-wide impact crater.
Did a migrating Jupiter turn Venus into hell? By Paul Sutter The giant planet's long-ago migration likely had big impacts.
'Grand claims' of life on Venus lack evidence, skeptics say By Adam Mann A roundup of the various pushback and criticisms to the claim that there could be life on Venus
What if Earth had rings? By Charles Q. Choi 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.
An aurora that lit up the sky over the Titanic might explain why it sank By Mindy Weisberger A geomagnetic storm that sparked spectacular aurora displays could also have contributed to the sinking of the Titanic.
NASA gearing up for epic asteroid-sampling maneuver next month By Mike Wall 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.
Are some black holes wormholes in disguise? Gamma-ray blasts may shed clues. By Charles Q. Choi Unusual flashes of gamma rays could reveal that what appear to be giant black holes are actually huge wormholes, a new study finds.
Tiny cubesat launching next year to blaze trail for NASA moon-orbiting space station By Leonard David A high-tech pioneer for NASA's moon-orbiting Gateway space station is being readied for liftoff early next year.
Where to next in the outer solar system? Scientists have big ideas to explore icy moons and more. By Meghan Bartels If you had a few billion dollars and some of the most talented space scientists and engineers in the world, where would you go?
'Giant impact' theory of moon's formation gets another boost By Elizabeth Howell 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.
Earth life may have traveled to Venus aboard sky-skimming asteroid By Mike Wall If there is indeed life on Venus, it may have come from Earth — aboard an asteroid that scooped up microbes high in our skies.
Rosetta's 'rubber ducky' comet has ultraviolet auroras By Hanneke Weitering 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.
Surprise! The ring around M87 galaxy's monster black hole wobbles over time. By Mike Wall The first black hole to be imaged directly is giving up even more of its secrets.
