Image of planetary nebula M76 (<a rel="nofollow" class="external free" href="http://www.princeton.edu/~rvdb/images/NJP/m76.html">http://www.princeton.edu/~rvdb/images/NJP/m76.html</a>) taken by Robert J. Vanderbei.
<a href="https://en.wikipedia.org/wiki/User:Vanderbei" class="extiw" title="wikipedia:User:Vanderbei">Vanderbei</a> at <a href="https://en.wikipedia.org/wiki/" class="extiw" title="wikipedia:">English Wikipedia</a>
CC BY 2.5
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