If confirmed, this would be among the largest rocky planets we’ve ever found. Found about 500 light-years from Earth, BD+20594b completes an orbit of its host Sun-like star every 42 days.

This gives it a density about the same as Earth’s, implying that it is likely rocky in composition. This makes CoRoT-7b the only confirmed rocky extrasolar planet, and therefore the largest ...

A planet roughly half the size of Neptune might be 100 percent rock, making it the largest known rocky world.

The hunt for potentially habitable rocky planets in our galaxy has been the holy grail of exoplanet studies for decades.

The former title holder of "biggest rocky planet" went to Kepler-10c, which has a radius more than double that of Earth. We thought this was as big as rocky planets could get.

The biggest planet orbiting TRAPPIST-1 doesn’t appear to have an atmosphere. ... A rocky planet that circles a small star nearly 40 light-years from Earth is hot and has little or no atmosphere, ...

NASA’s Kepler spacecraft has pulled in the largest crop of confirmed exoplanets ever found by the K2 mission – a triple-digit trove that includes a star system with four small planets that may ...

WASHINGTON, June 25 (Reuters) - In addition to providing a trove of information about the early universe, the James Webb ...

A new theory for how rocky planets form could explain the origin of so-called "super-Earths" -- a class of exoplanets a few times more massive than the Earth that are the most abundant type of ...

Astronomers have discovered a new type of rocky planet beyond the solar system that weighs more than 17 times as much as Earth while being just over twice the size, scientists said on Monday.