Planet 9 from Outer Space: Searching for a Distant Planet in our Solar System - Livestream

Just when the world was finally getting used to only having eight planets orbiting the Sun, the presence of a new ninth one is slowly coming into view at the edge of the solar system. This planet -- Planet Nine -- is inferred from of its gravitational effects shaping the disk of small icy bodies beyond Neptune known as the Kuiper belt. Dr. Brown will talk about the history of planetary discovery (and demotion), why we think a new one is on the verge of being found, and the techniques that we are using to try to find this very faint body lurking in the far reaches of our planetary system.

Speaker: Dr. Michael Brown is a Professor of Planetary Astronomy at the California Institute of Technology.

YouTube link to view. Lecture will be available at this link afterwards also.