Astronomers have discovered a previously unknown galactic collision between the Milky Way and the mysterious 'Kraken galaxy.'
Astronomers report a strange new feature of the aurora-like STEVE, which they are calling 'streaks.'
An epic photo shows the ESO's Very large Telescope firing four orange lasers at a distant star system.
Lenticular clouds look like saucers and form when wind meets mountains. This photo is one of the Royal Meteorological Society's favorites of the year.
Climate archivists have found the coldest day ever in the Northern Hemisphere, set by Greenland in 1991
An epic series of satellite images shows smokes from the California wildfires clashing with hurricanes in the Eastern United States and Gulf Coast.
Scientists used marine fossils and orbital data to recreate 66 million years of climate history. Its shows that climate change is anything but 'normal.'
Mysterious midnight disaster spared critical electronics in iconic alien-hunting telescope called the Arecibo Observatory in Puerto Rico.
New NASA imagery shows that the St. Patrick bay ice caps have vanished from Arctic Canada, two years sooner than scientists predicted
The United States Space Force has a new recruit in their mission to keep planet Earth safe. His name is Ghost, and he likes to go clip-clop on the beach.
Scientists unveiled the largest 3D map of the universe ever, showing its expansion rate over 11 billion years.
Using thousands of seismic wave recordings, researchers mapped the mysterious 'blobs' deep below the Pacific Ocean and found they are even bigger than imagined.
Twin shock waves produced by the galaxy's central black hole could have inflated the gargantuan Fermi Bubbles about 6 million years ago, a new study suggests.
Photographer Andrew McCarthy photographed the demarcation between the moon's light and dark sides for two weeks to create this unbelievably crisp image of our satellite's Earth-side craters.
An unusually strong polar vortex kept an ozone hole open over the North Pole for nearly a month — now, it's finally shut again.
The alleged exoplanet Fomalhaut b was discovered in 2004 and disappeared in 2014. Astronomers now say it was never a planet to begin with.
A record-size hole in the ozone layer has been detected over the North Pole, but it should disappear in a few weeks.
In six studies published March 16 in a special edition of The Astrophysical Journal supplemental series, astronomers used NASA's Hubble Space Telescope to spy on 13 quasar outflows.
Researchers discovered an uncharted island beneath melting Antarctic ice. Its rocky underbelly could hold clues to the continent's response to climate change.
Astronomers discovered a 'minimoon' that's been orbiting Earth for about three years, and may soon leave our planet's orbit.
The 12 constellations of the Zodiac contain some of the weirdest, most wonderful objects in the universe. Here are our favorites.