NASA’s Spitzer, TESS Find Potentially Volcano-Covered Earth-Size World
The gravitational tug of a neighboring planet may heat the world’s interior, creating the right conditions for volcanic activity on the surface. Astronomers have discovered an Earth-size exoplanet, or world beyond our solar system, that may be carpeted with volcanoes. Called LP 791-18 d, the planet could undergo volcanic outbursts as often as Jupiter’s moon …
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