Scientists have discovered an Earth-like planet orbiting a dead star 4,000 light years from here, giving us a humbling glimpse into Earth's likely fate. Published in Nature Astronomy, the planet ...

The X-ray signal from WD 2226-210 is similar to the X-ray emissions of two other white dwarfs that do not sit within cocoons ...

many astronomers have long wished that a planet existed between Mars and Jupiter to make up for the dead space there. But, if it had, we could have ended up with an uninhabitable Earth.

T he discovery of an Earth-like planet 4,000 light years away in the Milky Way galaxy provides a preview of one possible fate for our planet billions of years in the future, when the sun has ...