Extreme exomoons with tidal heating and thick, hydrogen-rich atmospheres may be able to create billions of years of potentially habitable surface conditions.

A star about 600 light-years away is giving astronomers a front-row view to the environments in which rocky planets like Earth form around the most abundant stars in the universe. Called ISO-ChaI 147, ...

Talk about a hot mess. Scientists have uncovered a hellish “lava world” where temperatures soar to a blistering 2,700 degrees Fahrenheit — hot enough to melt rock into a churning ocean of magma and ...

Astronomers have discovered a new class of exoplanet that defies traditional categories of planetary classification. In a ...

Conditions in the early universe might have enabled rocky planets with water to form much earlier than anticipated, potentially allowing life to begin sooner too. Astrophysicists studying the early ...

Add Yahoo as a preferred source to see more of our stories on Google. Mysterious blasts of radio waves from across the universe called fast radio bursts help astronomers catalog matter. ESO/M.

In 2011, astronomers announced that our galaxy is likely teeming with free-floating planets. In 2011, astronomers announced that our galaxy is likely teeming with free-floating planets. In fact, these ...

Our solar system is way more bizarre and dynamic than what our school textbooks taught us. From Venus being super hot to ...

Rocky planets like our Earth may be far more common than previously thought, according to new research published in the journal Science Advances. It suggests that when our solar system formed, a ...

(The Conversation is an independent and nonprofit source of news, analysis and commentary from academic experts.) Chris Impey, University of Arizona (THE CONVERSATION) If you look across space with a ...