Hey, everyone two pieces of history I’m going to cover today. First, Apollo 10 launched 48 years ago on this day in 1969. Also, India became the sixth country to demonstrate nuclear weapons capabilities when they tested their first nuclear device on May 18th, 1974, so I'm going to talk a little about space based nuclear surveilance satellites.

https://heasarc.gsfc.nasa.gov/docs/heasarc/missions/vela5a.html