Robert Stephan took this picture of M33, a big spiral galaxy about 3 million light-years away. The streaks in the picture are of interferring satellite trails, which are usually cut out of the final picture. He chose not to cut this out because he realized that it was also a relatively rare sight. His picture shows the tail of an aircraft passing through his telescope's view. A navigational strobe light flashed across the tail at the perfect moment. It produced a brilliant and incredibly sharp image.
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