GJ 436b: Astronomers Discover Giant Comet-Like Tail on Neptune-Sized Exoplanet

Using the NASA/ESA Hubble Space Telescope, a group of astronomers has discovered an enormous cloud of hydrogen dispersing from the warm, Neptune-sized planet exoplanet GJ 436b (also known as Gliese 436b). Discovered in August 2004, Gliese 436b orbits a red-dwarf star located in the constellation Leo, around 33.4 light-years away. The planet has an orbital [...] —> Read More