Our search for exoplanets is focused on Milky Way stars. It's been successful, with more than 6,000 detected so far.

Exoplanets are planets outside Earth's solar system. In 1995, a gas giant named 51 Pegasi b, which orbits a star similar to Earth's sun, etched its name in history as the first exoplanet ever ...

"Life can be understood as complexity, and water has a wide range of properties that enable this complexity." Scientists have developed a better model to understand "steam worlds," which are planets ...