![planet 9](/sites/default/files/styles/max_325x325/public/2021-04/Screen%20Shot%202021-04-02%20at%2010.22.54%20AM.png?itok=obFNUvth)
Planetary scientists and cosmologists at Penn work together to find planets that might be hiding in the far reaches of the solar system. Researchers at Penn hosted a first-of-its-kind workshop by bringing together experts in planetary science and cosmology to develop a strategy for finding new planets and studying objects in the outer reaches of the solar system.