When Mike Brown discovered the dwarf planet Eris in 2005, this set a chain of events in motion that led to the re-classification of Pluto. | Mike Brown

Where Are You Hiding Planet X, Dr. Brown?

Where are you hiding Planet X, Dr. Brown? Find out where Dr. Mike Brown is hiding Planet X, or isn't hiding any hypothetical astronomical body.

Published On 11/04/2009
3:00 AM EST