Clocking Neptune’s spin


Related images(click to enlarge) A day on Neptune lasts precisely 15 hours, 57 minutes and 59 seconds, according to the first accurate measurement of its rotational period made by University of Arizona planetary scientist Erich…

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The Spitzer photo atlas of galactic ‘train wrecks’


Related images (click to enlarge) Five billion years from now, our Milky Way galaxy will collide with the Andromeda galaxy. This will mark a moment of both destruction and creation. The galaxies will lose their…

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