See also: 1674 in science, other events of 1675, 1676 in science, list of years in science
Astronomy Giovanni Cassini discovers Saturn's Cassini Division John Flamsteed is appointed the first Astronomer Royal Births February 28 - Guillaume Delisle, French scientist, one of the founders of modern geography (died 1726) Deaths October 27 - Gilles de Roberval, French mathematician (born 1602)