Experts have determined it to be a "super-puff," an exoplanet with a large but extended atmosphere. The most noteworthy ...

Scientists spotted the heavy water (which we'll get into in just a moment) in the planet-forming disk of gas and dust around ...

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 ...

Exoplanet TRAPPIST-1 e may contain an atmosphere and liquid water, NASA scientists said. Research into the exoplanet is ongoing.

That's a big deal, as "PLATO is on track for the final key tests to confirm that it is fit for launch," ESA officials wrote ...