Image of the Moon transiting across the Sun, taken by SDO in 171 angstrom extreme ultraviolet light on Aug. 21, 2017.
NASA/SDO
<a rel="nofollow" class="external free" href="https://www.nasa.gov/image-feature/goddard/2017/sdo-views-2017-solar-eclipse-171-angstrom">https://www.nasa.gov/image-feature/goddard/2017/sdo-views-2017-solar-eclipse-171-angstrom</a> (<a rel="nofollow" class="external text" href="https://www.nasa.gov/sites/default/files/thumbnails/image/latest409601712copy.jpg">direct link</a>)