"GJ 273b, Come In Please!" --Astronomers Debate Wisdom of Messaging Potentially Advanced Alien Civilizations (WATCH Video)

This October, scientists and artists beamed a message to GJ 273, a red dwarf also known as Luyten's star that lies 12.36 light-years from Earth and hosts two known planets, one of which, GJ 273b, may be capable of supporting...