Speaker: David Jewitt (UCLA)
Title: Interstellar Interlopers
Abstract:
Planet formation is dirty and inefficient, resulting in the ejection of large numbers of planetesimals to interstellar space.  For the first time, we have detected interlopers in the solar system having an origin in the protoplanetary disks of other stars.  I will summarize the measured and inferred properties of the first two interstellar interlopers, 1I/Oumuamua and 2I/Borisov, then discuss implications for the interloper population of the galaxy.