1990 – STS-32 Launch Mission duration: 10 days, 21 hours, zero minutes, 36seconds. Landed revolution 172. Longest Space Shuttle flight to date. 

1986 – Stephen Synnott‘s Discovery of Uranus Moon Cressida

1839 – South African Thomas Henderson, using geometrical parallax, first measures the distance to a star ( Alpha Centauri) other than the Sun.

1793 – Jean-Pierre Blanchard becomes the first person to fly in a balloon in the United States.[Read more about Aerial Navigation in 1850]