An international team of astronomers has detected helium — the second-most abundant element in the Universe after hydrogen — in the atmosphere of WASP-107b, a super-Neptune exoplanet approximately 200 light-years away in the Virgo constellation. This is the first time this inert gas has been detected in the atmosphere of an extrasolar planet. An artist’s impression of WASP-107b. Image credit: NASA / ESA / Hubble / M. Kornmesser. Helium...
