On this day in 2006 - September 18th - Anousheh Ansari became the first woman space tourist.
Ansari is an Iranian-American engineer and co-founder and chairwoman of Prodea Systems. Her previous business accomplishments include serving as co-founder and CEO of Telecom Technologies, Inc. (TTI). The Ansari family is also the title sponsor of the Ansari X Prize.
On this day in 1999 - September 22nd - NASA's Pioneer 10 reached the distance of 50 AU from the Sun.
The spacecraft was the first one to cross the Asteroid Belt, and it carried out the first mission to Jupiter. It was also the first to reach escape velocity from the Solar System. At 50 AU from the Sun, it was 50 times farther away from the Sun than Earth is, about 7.5 billion km (4.7 billion miles). It's now nearly 122 AU away.