Breakthrough Listen is a program designed to search for evidence of alien life by scouring the the skies for distant radio signals.
Silicon Valley investor Yuri Milner said he was not involved in any political activity.
Facebook's CEO will be joined by astrophysicist Stephen Hawking and Russian billionaire Yuri Milner in Breakthrough Starshot.
If intelligent life is common in the galaxy, where is everybody? Why haven't we heard from them?
The 10-year project will involve scouring 1 million stars and 100 galaxies for signs of life.