Editing 1974 in science (section)

==Astronomy and space exploration==
* February 8 – After 84 days in [[outer space|space]], the last crew of the temporary American [[space station]] [[Skylab]] return to [[Earth]].
* February 13–15 – [[Sagittarius A*]], thought to be the location of a [[supermassive black hole]], is identified by Bruce Balick and Robert Brown using the baseline interferometer of the United States [[National Radio Astronomy Observatory]].<ref>{{cite book|last=Melia|first=Fulvio|title=The Galactic Supermassive Black Hole|publisher=Princeton University Press|year=2007|isbn=978-0-691-13129-0|page=2}}</ref>
* November 16 – [[Arecibo message]] transmitted from [[Arecibo Observatory]] (Puerto Rico) to [[Messier 13]].
* [[Hawking radiation]] is predicted by [[Stephen Hawking]].<ref>{{cite journal|last=Hawking|first=S. W.|date=1974-03-01|title=Black hole explosions?|journal=[[Nature (journal)|Nature]]|volume=248|issue=5443|page=30|doi=10.1038/248030a0|bibcode=1974Natur.248...30H|s2cid=4290107 }}</ref>