reiner gamma

This strange feature, near the crater Reiner, is completely unique. It is composed of bright material resembling the ejecta from a crater, but is completely flat. Even the Lunar Orbiter probes were unable to detect any relief.

Photo: António Cidadão. His Home Page of Astrophotography includes stereograms, animations, and "Seven Craters a Week" from his forthcoming photographic lunar atlas.

Inconstant Moon