Strange Cloud Pictured News Today

50 years, but some files are missing. heres the bbcs david shukman. >> reporter: a few ghostly lights, secret military investigations, fuel for endless curiosity about whether were alone. the latest official document, some heavily censored, record dozens of apparent sightings, like this strange cloud pictured in sri lanka. they also offer reasonable explanations, including that sometimes its just a hoax. >> it might have been the martians have landed. >> reporter: in 1967 the discovery of six of...

Released previously classified documents on ufos that date back 50 years, but some files are missing. heres the bbcs david shuckman. >> reporter: a few ghostly lights, secret military investigations, fuel for endless curiosity about whether were alone. the latest official document, some heavily censored, record dozens of apparent sightings, like this strange cloud pictured in sri lanka. they also offer reasonable explanations, including that sometimes its just a hoax. >> it might have been the m...