The faraway exoplanet could help provide answers as to why there are hardly any planets with twice the diameter of Earth.

A distant exoplanet discovered, named Enaiposha, is unlike anything found in our own solar system, similar to a "super-Venus" ...

Pollard A quartet of Earth-like worlds, each about 20% to 30% the size of our planet, circle one of our ... which have not been officially named yet, are "so close to their home star that they ...

Astronomers have made an exciting breakthrough by discovering four sub-Earth exoplanets orbiting Barnard’s Star, our closest ...

The four planets are classified as sub-Earths because each one is about 19% to 34% the mass of Earth, according to new ...

Izidoro said although it would be rare, rocky planets in the habitable zone could form through late-stage giant impacts, similar to how Earth and its moon formed. "We can push our model further ...

Hulu has released a sneak peek of its upcoming TV shows, and that means we have a new look at Alien: Earth. The brief preview offers our first proper ... to-face with the planet’s greatest ...

A new study presents a compelling new model for the formation of super-Earths and mini-Neptunes -- planets that are 1 to 4 times the size of Earth and among the most common in our galaxy.

Only the three stars that make up the Alpha Centauri system lie closer to us. The planets newly discovered around Barnard’s ...

making Earth-like planets possible around white dwarfs. This discovery could help widen the focus of our search for life elsewhere in the cosmos, suggesting that systems that had previously been ...

KELT-9b is not just your average "hot Jupiter" - a name given ... orbit its star than Earth does - making our year roughly the same length. All you need to know about planets in our solar system ...

Last year, astronomers announced that a planet orbits Barnard’s star. Now, researchers have confirmed the existence of three more.