Back side of a gold medal of the 2019 <a href="https://en.wikipedia.org/wiki/International_Physics_Olympiad" class="extiw" title="w:International Physics Olympiad">International Physics Olympiad</a> in Tel Aviv, Israel. The medal depicts the trajectory of the <a href="https://en.wikipedia.org/wiki/Beresheet" class="extiw" title="w:Beresheet">Beresheet</a> lunar lander between earth and moon.
<a href="//commons.wikimedia.org/wiki/User:Ipho19" title="User:Ipho19">Ipho19</a>
<span class="int-own-work" lang="en">Own work</span>