NWA 11303 is a lunar meteorite that was found near Tindouf, Algeria in 2017. Lunar meteorites are created when an asteroid smashes into the Moon hard enough to blast chunks of the Moon into space. In the impact, the Moon rock gets broken up and melted together which results in a type of rock called "breccia". Some of the impact debris was captured by the gravitational pull of the Earth, causing it to fall to the ground as a meteorite.

NWA 11303 was found by a Mauritanian dealer and its chemical analysis and classification was done by A. Irving and S. Kuehner at the University of Washington Department of Earth and Space Sciences.

The lunar material fragmented into smaller pieces during its passage through Earth's atmosphere. This is one of those fragments.