Editing Close encounter (section)

==Hynek's scale==
Hynek devised a six-fold classification for UFO sightings.<ref name="Dick1999">{{cite book|author=Steven J. Dick|title=The Biological Universe: The Twentieth Century Extraterrestrial Life Debate and the Limits of Science|url=https://books.google.com/books?id=xd2-nYXa-HUC&pg=PA309|access-date=24 October 2011|date=28 December 1999|publisher=Cambridge University Press|isbn=978-0-521-66361-8|pages=309–}}</ref><ref name="GoldsmithOwen2001">{{cite book |author1=Goldsmith |first=Donald |url=https://archive.org/details/searchforlifeinu00gold |title=The search for life in the universe |author2=Tobias C. Owen |date=April 2001 |publisher=University Science Books |isbn=978-1-891389-16-0 |pages=521– |access-date=2011-10-24 |url-access=registration}}</ref>

The six levels are arranged according to increasing proximity:
{| class="wikitable"
|+
!Number
!Title
!Description
!Notes
|-
|1
|'''Nocturnal lights'''
|Lights in the night sky.<ref>J. Allen Hynek, ''The UFO Experience: A Scientific Enquiry'', Ballantine Books, 1972, p. 41.</ref>
|
|-
|2
|'''Daylight discs'''
|UFOs seen in the daytime, generally having discoidal or oval shapes.<ref>J. Allen Hynek, ''The UFO Experience: A Scientific Enquiry'', Ballantine Books, 1972, p. 59.</ref>
|
|-
|3
|'''Radar-visual'''
|UFO reports that have radar confirmation—these supposedly try to offer harder evidence that the objects are real, although radar propagation can be occasionally discredited due to atmospheric propagation anomalies.<ref>J. Allen Hynek, ''The UFO Experience: A Scientific Enquiry'', Ballantine Books, 1972, pp. 80-1.</ref>
|
|-
|4
|'''Close encounters of the first kind (CE1)'''
|Visual sightings of an unidentified flying object, seemingly less than {{convert|500|ft|m}} away, that show an appreciable angular extension and considerable detail.
|
|-
|5
|'''Close encounters of the second kind (CE2)'''
|A UFO event in which a physical effect is alleged; this can be interference in the functioning of a vehicle or electronic device, animals reacting, a physiological effect such as paralysis or heat and discomfort in the witness, or some physical trace like impressions in the ground, scorched or otherwise affected vegetation, or a chemical trace.
|
|-
|6
|'''Close encounters of the third kind (CE3)'''
|UFO encounters in which an animated entity is present—these include humanoids, robots, and humans who seem to be occupants or pilots of a UFO.<ref>J. Allen Hynek, ''The UFO Experience: A Scientific Enquiry'', Ballantine Books, 1972, p. 158.</ref>
|See also: [[First contact (anthropology)]]
|}

=== Bloecher subtypes ===
UFO researcher [[Ted Bloecher]] proposed six sub-types for the close encounters of the third kind in Hynek's scale:<ref>{{cite book | title = The UFO Handbook: A Guide to Investigating, Evaluating and Reporting UFO Sightings | last = Hendry | first = Allan | isbn = 978-0-385-14348-6 | date = August 1979 | publisher = Doubleday }}</ref>{{Ordered list|Aboard: an entity is observed only inside the UFO.|Both: an entity is observed inside and outside the UFO.|Close: an entity is observed near to a UFO, but not going in or out.|Direct: an entity is observed—no UFOs are seen by the observer, but UFO activity has been reported in the area at about the same time.|Excluded: an entity is observed, but no UFOs are seen and no UFO activity has been reported in the area at that time.|Frequence: no entity or UFOs are observed, but the subject experiences some sort of "intelligent communication".
| list_style_type = upper-alpha
}}