Are Earth and Venus the only volcanic planets? Not anymore.

Astronomers discover alternative Earth likely covered with volcanoes
By Jules Bernstein |

Imagine an Earth-sized planet that’s not at all Earth-like. Half this world is locked in permanent daytime, the other half in permanent night, and it’s carpeted with active volcanoes. Astronomers have discovered that planet.

The planet, named LP 791-18d, orbits a small red dwarf star about 90 light years away. Volcanic activity makes the discovery particularly notable for astronomers because volcanism facilitates interaction between a world’s interior and its exterior.

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