Answer:
10.Hosted Public Television's Most-Watched Show
9.Never Said His Famous Catchphrase
8.Tried to Have Marijuana Legalized
7.Crafted a Universal Message to Aliens
6.Became Engaged to Third Wife Before Their First Date
5.Mentored Neil deGrasse Tyson
4.Made Turtlenecks His Signature Look
3.His Work Was Preserved by a Cartoonist
2.Sued Apple for Using His Moniker as a Codename
1.Had an Asteroid Named After Him (and a Unit of Measurement)
Explanation: