For millennia, people have wondered if there are other Earths somewhere out there in the cosmos. Well, we're the lucky generation: for the first time in history, we're actually finding out. NASA's Kepler Space Telescope has been in orbit for the last three years looking for twin Earths and it's begun to provide some answers to that age-old question. Graham Phillips goes to Kepler's home, the NASA AMES research labs in California, to find out about the exciting new results streaming in.