When John Dobson invented the Dobsonian telescope he changed the face of amateur astronomy. The 96-year old pioneer talks with Mat Kaplan. Emily Lakdawalla loves Curiosity’s self-portraits. Bill Nye the Science Guy is in London to host a youth webcast with International Space Station astronaut Sunita Williams. Bruce Betts keeps us from getting Lost in Space and helps Mat give away a cool Curiosity bumper sticker in What’s Up.