October 23rd, 2008
Episode 121 of 474 episodes
Everyone loves a theme. And this week we've collected together some of your questions about relativity. More light speed spacecraft, twin paradoxes, and the mixing up of gravity, time and mass. If you've got a question for the Astronomy Cast team, please email it in to email@example.com and we'll try to tackle it for a future show. Please include your location and a way to pronounce your name.