discu
Newsletters
Mentions
Extension
Pricing
Login
Sign Up
Reddit
Stephen Hawking Helps Launch Project 'Starshot' for Interstellar Space Exploration which can reach the nearest star in 20 years
http://www.space.com/32546-interstellar-spaceflight-stephen-hawking-project-starshot.html
113 comments
12/4/2016
worldnews