A European spacecraft is unraveling the secrets of the weird long cloud that has been appearing again and again in the Martian sky for years.
Two of the world's most powerful spacefaring nations are teaming up for their most ambitious project yet: a Chinese-Russian research station on the moon.
Tiny snowflakes of radioactive uranium that trigger massive nuclear blasts might explain some of the universe's more mysterious star explosions.
New research suggests a way to move heat around "tidally locked" alien planets: ocean currents whipping around the worlds faster than they rotate.
Astronomers have found the farthest known source of radio emissions in the universe: a galaxy-swallowing supermassive black hole.
The Hubble space telescope entered into "safe mode" due to a software error, but is safe and stable.
If you live in Vermont and heard an explosion just before dinnertime Sunday (March 7), there's a good chance that was a shockwave from an incoming meteor exploding over the state.
Rare chemical makeup in a meteorite that fell to Earth in 2020 hints at its unusual origins: from a pre-planetary body dating to our solar system's beginnings.
Mount Etna has been spewing lava across Sicily for weeks during a series of eruptions captured by a slew of Earth-orbiting satellites.
A year ago, the bright red star Betelgeuse in the Orion constellation hit the headlines for a stark fading episode that astronomers couldn't explain. They still can't, although they keep trying.
Astronomers detected the first-known 'space hurricane' raging over the North Pole for 8 hours in 2014, a new study found.
If you are perplexed by reports of unidentified aerial phenomena and possible visitations of alien spacecraft, you can take action with do-it-yourself sky-monitoring gear.
We've got good news and bad news about the latest explosive SpaceX Starship test in Boca Chica, Texas.