A piece of lunar soil, presented to the Soviet Union by Americans, it's exhibited in the Memorial Museum of Astronautics in Moscow. Delivered to Earth from the moon by the Apollo 11 crew. Flag of the Soviet Union, which had been on the Moon with the Americans.
<a href="//commons.wikimedia.org/wiki/User:%D0%96%D0%B0%D0%B1%D1%8B%D1%88" title="User:Жабыш">Жабыш</a>
CC BY-SA 3.0
<span class="int-own-work" lang="en">Own work</span>