Water Vapor Found on Neptune-size Alien Planet
Wednesday, September 24, 2014 - 12:30
in Astronomy & Space
A Neptune-sized planet beyond the solar system has telltale traces of water vapor in its atmosphere, making it the smallest known wet exoplanet yet, scientists say. The exoplanet HAT P-11b is about four times the size of Earth and about 124 light-years aw