Carl and Richard talk about space telescopes - but first, a comment about Thorium Molten Salt Reactors and a Kickstarter for a Thorium documentary called The Good Reactor. Also on Kickstarter is Arkyd, the space telescope that anyone can use - get a picture of yourself in space! The conversation then digs into space observatories, there are literally dozens up there today. Everyone knows about Hubble, but what about Compton, or Spitzer or Chandra? There are different observatories for different parts of the electromagnetic spectrum. Richard brings up Kepler, the little telescope that has detected hundreds of earth-sized planets around other stars. And don't forget about the upcoming replacement for Hubble, the James Webb Telescope!