Asteroid 323 Brucia became the first asteroid discovered using photography.
Source
NASA's New Horizons space probe completed the first flyby of Pluto in the history of human spaceflight.
The Soviet Union launched its second reconnaissance satellite, Kosmos 4.
Pluto was officially named.
American astronomer Clyde Tombaugh discovered Pluto.
The National Space Development Agency of Japan selected Mamoru Mohri, Chiaki Mukai, and Takao Doi as Japan’s first astronauts.
