Click above to listen to Part 1 of 100% Invisible, featuring Mike Brown, astronomer at the California Institute of Technology, discussing the evidence for a “super Earth” sized planet located (but not yet directly observed) in the far reaches of our solar system.
100% Invisible:
Part 1: Mike Brown / New Planet
Part 2: Michael Lemonick / Planet X
Part 3: Arthur McDonald / Neutrino Nobel
Part 4: Lisa Randall / Dark Matter







