Giant mega-Earth is 23 times more massive than Earth
View larger. | Artist’s concept of a giant mega-Earth. The newly discovered mega-Earth GJ 523b is 23.5 times…
Astronomers Discover Rare ‘Mega-Earth’ Exoplanet: Gliese 523b
Gliese 523b (GJ 523b) is a young, ultra-dense planet that orbits almost perpendicular to its star’s spin, according…