Tag: Art
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via Tumblr http://bit.ly/27bBDSu Mercury Transit (Composite Image) On May 9, 2016, Mercury passed directly between the sun and Earth. This event – which happens about 13 times each century – is called a transit. NASA’s Solar Dynamics Observatory, or SDO, studies the sun 24/7 and captured the entire seven-and-a-half-hour event.…