Hubble discovers a distant plant that 'gained a second atmosphere'
Hubble discovers a distant plant that 'gained a second atmosphere' Ryan Morrison For Mailonline © Provided by Daily Mail MailOnline logo A small gas exoplanet may have lost its atmosphere billions of years ago, but then gained a second one through volcanic activity, according to astronomers. The planet, GJ 1132 b, is thought to have begun as a gaseous world, similar to Jupiter or Saturn but smaller than Neptune, with a thick hydrogen blanket of atmosphere. It quickly lost its primordial hydrogen and helium atmosphere, having it 'cooked off' within the first 100 million ...