???????????????? ????????????? ????????????? ?????????? ???????? ?????????? ??????????????????? ????????????????????????? ????????? ???????????????? ????????????? ??????? (?????????:Unidentified Flying Object) ???????????? ?????????????????? ?????????????????????????????? UFO ?? ??????????????

????????????? ???????????( Unidentified flying object (UFO) [ ?????????? ]

???????????? ????????????????? UFO(Unidentified flying object)???????????? ??????????????? ???????????????????????? ???????????????? ??-?? ????????????????????? ????????? ??-?? ???????????????? ?????????????????? ???????????? ???????? ??????????????? ???????????? ???????? ???????????? ?????????????????????????????????? ???????????? ????????????????? ?????????????????? ????????? ????????? ??????????????????? ???????? ?????????????????

???????????? ??????????? ( Identified flying objects (IFOs) [ ?????????? ]

IFOs????? ??-?? ???????????????? ????????????? ????????? ???????????? ????????????? ????????????????

1. ????????????????????????? (????-??????????? ????????? ????????????)
2. ?????????????
3. ????????????(???????????????????????) ????????????

IFOs????? ??-?? ???????????????? ????????????????????????????????? (????-????? ????????? ?????????????? ?????????????????? ?????????????? ???????????)

??????? [ ?????????? ]

Allan Hendry, The UFO Handbook: A Guide to Investigating, Evaluating, and Reporting UFO Sightings, 1979, Doubleday & Co., ISBN 0-385-14348-6

???????????????????? [ ?????????? ]

• Wikinews - UFO Archive
• CIA educational summary on UFO Archived 9 May 2007 at the Wayback Machine . (working link or what? Maybe it should be used this link Archived 1 October 2019 at the Wayback Machine . instead?)
• NASA Institute for Advanced Concepts
• BBC article on Mexican Air-force videotape
• NASA UFO Hacker Video Interview Archived 13 November 2007 at the Wayback Machine .
• Popularmechanics Article - When UFOs Arrive: February 2004 Cover Story Archived 27 September 2007 at the Wayback Machine .