Ray Jayawardhana: Searching for Alien Planets

The Agenda with Steve Paikin

For centuries, we've looked to the skies and wondered: are we alone in the universe? Could there be alien "Earths" that harbour, or sustain life? University of Toronto astrophysicist Ray Jayawardhana spends his time searching for such planets. He joins Steve Paikin.
Scientific Frontiers
Jan 04, 2013