Interstellar

http://www.deepspace.ucsb.edu/projects/directed-energy-interstellar-precursors

Starlight Directed Energy for Relativistic Interstellar Missions (and many other applications) The Starlight program as known as DEEP-IN (Directed Energy Propulsion for Interstellar Exploration) and DEIS (Directed Energy Interstellar Studies) is a NASA…