Scientists discovered Earth’s episodic squishy lid, showing intermittent tectonic activity, revealing new insights into planetary evolution, habitability and the search for life beyond Earth.

For decades, the search for alien life has revolved around a narrow ring around stars where liquid water could exist on a planet’s surface. That “habitable zone” remains important, but astronomers are ...

When astronomers search for planets that could host liquid water on their surface, they start by looking at a star's habitable zone. Water is a key ingredient for life, and on a planet too close to ...

The importance of darkness, solar eclipses, Mars, the Webb Telescope and just how dangerous space is are the subjects for ...

See imaginative exoplanet worlds by St. Ann’s fifth graders at Blakemore Planetarium, Museum of the Southwest, on view ...

There are lots of reasons to search for planets around other stars—exoplanets. A big one is to find other places in the universe that might harbor life. We only know of one ...

Can planets orbiting M dwarf stars become habitable, or does the star’s activity prevent it? This is what a recent study ...

Planet hunters have grown used to strange worlds, but a handful of discoveries now point to something even more radical: ...

What happens when a planet contains immense quantities of water but is far too hot for that water to remain liquid?

European astronomers report the discovery of a second alien world in the TOI-1422 planetary system located some 500 light ...

A nearby binary star system is bereft of giant planets, but scientists think it may still be a decent place to look for life.

A new study of the red dwarf system TOI-3884 has uncovered rare, persistent spot-crossing signals that reveal unusually detailed information about the star’s magnetic activity and the planet’s orbital ...