Jupiter's volcanic Moon.jpg

Although not our Moon, this limb photo of Jupiter’s volcanic moon, Io, shows a perfect example of an explosive eruption on a body without an atmosphere, lofting pyroclasts into space from the surface. This is likely very similar to what was happening on our Moon billions of years ago. Check out his link for a video of the eruption: NASA SVS | Io Erupts. Image Public Domain: NASA's Goddard Space Flight Center; NASA/JPL/University of Arizona