New Worlds in the Making: Origins of Planets and Brown Dwarfs
This afternoon I attended Ray Jayawardhana 's lecture at the University of Toronto, New Worlds in the Making: Origins of Planets and Brown Dwarfs . The lecture is part of the Royal Canadian Institute for the Advancement of Science free Sunday Science Lectures -- and was co-sponsored by the Royal Astronomical Society of Canada . The abstract of Jayawardhana's lecture is as follows: Until recently, we knew of only one planetary system, our own. During the past decade, astronomers have detected nearly 150 planets around other Sun-like stars, ending centuries of speculation. Over the same period, they have also discovered hundreds more of so called "brown dwarfs", which are too puny to light up as stars but which do not fit the traditional definition of planets either. Intriguingly, some brown dwarfs themselves may harbor planetary companions around them. The apparent ubiquity of both planets and brown dwarfs poses the question of their origins. I will report on how a...