Hot Exoplanet's Escaping Helium Seen from Ground - Artist Impression

Using the Calar Alto 3.5-meter telescope, researchers captured near-infrared observations of helium escaping the atmosphere of a gas giant exoplanet called WASP-69b. -- A Helium Tail Trails This Fluffy Alien Planet: https://www.space.com/42654-helium-tail-discovered-trailing-exoplanet.html

Credit: Space.com / animation: Gabrielle Perez Diaz (IAC) / produced and edited by Steve Spaleta