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" ... A thin layer of icy, high-altitude clouds, not unlike cirrus clouds on Earth, could have warmed Mars’ atmosphere sufficiently to cause a greenhouse effect. University of Chicago planetary scientist Edwin Kite, the paper’s lead author, says he and colleagues’ new climate model helps cement the idea of a warm, young Mars. ... "
" ... Colloquially known as galactic cirrus clouds, these dark nebulae are actually clouds of molecular... [+] gas found in the disk and halo of the Milky Way. They contain over 100 organic molecules between them, many of which could serve as the precursors to life. ... "
" ... Who doesn't like to gaze at the clouds? I remember as a kid peering into the sky to name the types of clouds. Most elementary age students can rattle off cumulus, cirrus, nimbus, or stratus clouds pretty easily, but the reality is that there are far more cloud types. Clouds play very important roles in Earth's weather-climate system. I will explain why in a moment. The National Aeronautics and Space Administration (NASA) needs your help making sure its advanced satellite interests are correctly measuring clouds. If you have a smartphone, you can become a "NASA scientific research assistant" for the months of March and April. ... "