<p>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. This composite image of Mercury’s journey across the sun was created with visible-light images from the Helioseismic and Magnetic Imager on SDO.
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Image Credit: NASA's Goddard Space Flight Center/SDO/Genna Duberstein<b></b>
<a rel="nofollow" class="external text" href="https://www.flickr.com/people/24662369@N07">NASA Goddard Space Flight Center</a> from Greenbelt, MD, USA
<a rel="nofollow" class="external text" href="https://www.flickr.com/photos/gsfc/26871438371/">Mercury Transit (Composite Image)</a>