Sputnik’s Anniversary – Looking Back at 66 Years of Spaceflight

Neil deGrasse Tyson takes a 'candid look' at the history of spaceflight in new StarTalk book (exclusive)

Virgin Galactic's 1st commercial spaceflight launches on June 29. Here's how to watch live

Virgin Galactic's 1st commercial spaceflight launches this week. Meet the 6-person crew of Galactic 01