1975 in science

The year 1975 in science and technology included many events, some of which are listed below.

Astronomy and space exploration

• August 20 - Viking program: NASA launches the Viking 1 planetary probe toward Mars.

Biology

• August 7 - César Milstein and Georges Köhler report their discovery of how to use hybridoma cells to isolate monoclonal antibodies, effectively beginning the history of monoclonal antibody use in science^{Immunotherapy: past, present and future. Nature Medicine 9, 269-277.}