- January 16, 1969 - Yevgeny Khrunov and Aleksei Yeliseyev make first transfer between spacecraft (from Soyuz 5 to 4)
- January 27, 1967 - Three astronauts are killed in a fire aboard the Apollo 1 spacecraft, during a practice countdown.
- January 28, 1986 - The Space Shuttle Challenger explodes 73 seconds after the launch of STS-51-L, killing all seven astronauts.
