320 Light-Years Away, a Planet Confirms a Fundamental Cosmic Assumption

Scientists confirmed that an exoplanet mirrors its star’s chemical makeup, validating a core assumption about how planets form and evolve. Astronomers have found that the giant exoplanet WASP-189b closely matches the chemical makeup of its parent star, offering the first direct confirmation of a key idea in astrobiology. The breakthrough came from the first simultaneous [...]