... Atmospheres Detected on Two Extrasolar Planets . ... Credit Copyright: NASA / JPL-Caltech /T. Pyle ( SSC ) Explanation: Do extrasolar planets have water? In an attempt to find out, the orbiting Spitzer Space Telescope made detailed observations of the atmospheres of two planets that orbit stars other than our Sun. Unfortunately, water vapor was not detected in either exoplanet. ... Publications with keywords: extrasolar planet - water . Publications with words: extrasolar planet - water . ...