Hubble Uncovers 'Heavy Metal' Exoplanet Shaped Like a Football
NASA's Hubble Space Telescope has revealed magnesium and iron gas streaming from a strange, football-shaped world outside our solar system known as WASP-121b. The Hubble observations represent the first time that so-called "heavy metals"—elements heavier than hydrogen and helium—have been spotted escaping from a hot Jupiter, a large, gaseous exoplanet very close to it star.