Moonblast!

For many years, amateur astronomers reported seeing Transient Lunar Phenomena, TLP (or LTP) for short. The term was coined by Patrick Moore. These were sudden flashes or bright patches on the generally dull, grey, and apparently changeless lunar surface. These flashes or clouds were difficult to photograph, as they were not long lasting, and in the absence of hard evidence many professional astronomers were sceptical about such claims. But it now seems that the amateurs were right - the Moon is constantly being bombarded by meteoroids, and sometimes the impact makes quite a flash.