here...
Other links on 'astronaut UFO sightings':
Astronaut UFO Mythology debunked:
http://www.debunker.com/texts/astronaut_ufo.html
NASA engineers were worried that 'moon pigeons' seen outside Apollo
vehicles might be signs of problems (many were) and in 1971 did a special
study: http://members.aol.com/moonpigeons/
Alternate link:
http://web.archive.org/web/20040122193024/http://members.aol.com/moonpigeons
/
The space shuttle's hundred propellant valves often leaked fuel that
froze into space blizzards
(http://www.space.com/sciencefiction/phenomena/shuttle_ufos_991213.html).
Specific cases here: http://www.jamesoberg.com/ufo.html
In one tragic oversight, the crew of Columbia in January 2003 failed to
spot a broken piece of their heat shield drifting away a day after they
reached orbit (http://www.msnbc.com/news/887192.asp?0cv=TA01), thus missing
a chance to realize how badly their spaceship had been damaged during
launch.
Space/Science » in reply to Solving Space UFO Mysteries One at a Time
thanks -- more links