Crushed space rocks hint at exoplanets’ early atmospheric makeup

Kepler-186f

Burning bits of ground-up meteorites may tell scientists what exoplanets’ early atmospheres are made of. A set of experiments baking the pulverized space rocks suggests that rocky planets had early atmospheres full of water, astrophysicist Maggie Thompson of the University of California, Santa Cruz reported January 15 at the virtual meeting of the American Astronomical […]