Astronomy

Astronomy awesome science space Mars water - 8330128384
Via: Universe Today
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Via Ian O'Neill

According to MSL scientists based at NASA's Jet Propulsion Laboratory (JPL) in Pasadena, Calif., the ball isn't as big as it looks — it's approximately one centimeter wide. Their explanation is that it is most likely something known as a "concretion." Other examples of concretions have been found on the Martian surface before — take, for example, the tiny haematite concretions, or "blueberries", observed by Mars rover Opportunity in 2004 — and they were created during sedimentary rock formation when Mars was abundant in liquid water many millions of years ago.
galaxies Astronomy science funny - 7712986112
By Unknown
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The Hickson Compact Group 87 (HGC 87) is a small group of galaxies in which each galaxy is stretching each other gravitationally. It takes roughly 100 million years for these galaxies to orbit around their common center.