Scientists can't agree on why these hills in the Russian Arctic ripple with stripes.
The world's largest iceberg has disintegrated into an 'alphabet soup' of mini ice island, new NASA imagery shows.
Minimoon SO 2020, a rocket booster that has been orbiting Earth for about 60 years, will drift off forever next month.
This hazy spiral galaxy is one of the largest in the Virgo cluster — a collection of more than 2,000 galaxies.
Humanity is barreling toward a "ghastly future" of mass extinctions, health crises and constant climate-induced disruptions to society.
The CIA just turned over 2,700 pages of UFO-related material to The Black Vault, a free repository of UFO records online.
Mercury, Jupiter and Saturn will form a tight triangle in the sky this Sunday during a rare 'triple conjunction' event.
Mars' Valles Marineris is nearly 10 times as long as the Grand Canyon and three times as deep, but nobody knows how it formed.
A photographer filmed the "Great Conjunction" of Jupiter and Saturn as the heavenly bodies passed by Burj Khalifa, the world's tallest building.
From the best places to find them to what they might breathe, here are the newest clues we discovered about alien life.
The eROSITA X-ray telescope just revealed two strange bubbles of X-ray energy, sitting smack-dab inside the Fermi Bubbles.
The Gaia space observatory just released its most detailed map of the universe yet, including the trajectories of hundreds of millions of stars.
Australian scientists tested all 36 receivers on the ASKAP radio telescope for the first time ever, mapping 85% of the sky in 300 hours.
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.