This Day In Space History: August 21

1972

The Orbiting Astronomy Observatory 3, "Copernicus" is launched. Read about the mission here: https://nssdc.gsfc.nasa.gov/nmc/spacecraftDisplay.do?id=1972-065A

1989

Launched twelve years ago yesterday, Voyager 2 flies by Neptune's moon Triton. Read about Neptune's largest moon, and its encounter with the Voyager spacecraft here: https://www.wired.com/thisdayintech/2009/08/dayintech_0821/

1993

https://www.cnbc.com/video/2017/08/21/this-day-in-history-august-21-2017.html

NASA loses contact with the Mars Observer orbiter before its entry into Martian orbit.

2017

A total solar eclipse is visible over North America, the first time in 38 years!!!

For a complete list of today’s Space History, see  http://www.astronautix.com/a/august21.html