Mike Brown, the Richard and Barbara Rosenberg Professor and professor of planetary astronomy at the California Institute of Technology (Caltech), has been named a co-winner of the 2012 Kavli Prize in ...

Mike Brown, an astronomer at Caltech who originally proposed Planet Nine’s existence with his colleague Konstantin Batygin, says the candidate’s motion suggests it’s on a highly inclined and ...

Caltech professor Mike Brown and assistant professor Konstanin Batygin have been working together to investigate distant objects in our solar system for more than a year and a half.

A new paper examining and simulating the formation of wide-orbit planets has put the chances of our own Solar System harboring the hypothetical "Planet Nine" at up to 40 percent. In 2016, two ...

Dean chats with Mike Brown, the so-called "killer of Pluto," about why Pluto was demoted from planet status and how people have reacted to the change. And about a new planet that might take it's ...