episode description
Do other planets like Earth exist? Find out why a team of astronomers in the US has built a new telescope to look for planets outside our solar system and why the search is so important to the future of our world. Is anyone out there? For over 40 years scientists have been searching for extraterrestrial intelligence, but they’ve found nothing. Now the Allen Telescope Array, a string of 350 radio telescopes, is breathing new life into the search. Find out why SETI scientists now say we might be hearing from ET sooner than you think. What looks like frozen smoke, but is also the lightest solid material on the planet? Aerogel is a unique man made substance that insulates space suits, makes tennis rackets stronger and could be used one day to clean up oil spills.

