A huge geological structure on Mars resembling a bathtub ring may be evidence of an ocean that once covered a third of the Red Planet.
A huge geological structure on Mars resembling a bathtub ring may be evidence of an ocean that once covered a third of the Red Planet.
Lightning on Jupiter may pack more than 100 times the power of Earth's bolts, and may prove one million times stronger, a new study finds.
Our sun and a host of "solar twins" may have migrated away from the core of the Milky Way galaxy together long ago, potentially making the solar system more hospitable to life.
In the distant reaches of the solar system are many icy objects that resemble snowmen. Now, a new study reveals the simple way in which these mysterious objects might form.
Ancient shoreline features hint that water on Mars once formed a vast ocean.
"If they were purely made up of stars, they would be the densest galaxies in the universe."
Astronomers have detected a "free floating" rogue planet the size of Saturn drifting through the Milky Way some 10,000 light-years from Earth.
"We're not certain if having widespread liquid pockets instead of a global ocean makes Titan more or less habitable."
Small icy moons in the outer reaches of our solar system may hide boiling oceans underneath their surfaces, a new study finds.
