Hubble completes first atmospheric survey of Earth-sized exoplanets
Wednesday, July 20, 2016 - 14:51
in Astronomy & Space
Brooks HaysGREENBELT, Md., July 20 (UPI) -- New analysis suggests two Earth-like exoplanets, TRAPPIST-1b and TRAPPIST-1c, are without large, hydrogen-rich atmospheres.