NASA solar sail technology passes crucial deployment test

In his youth, NASA technologist Les Johnson was riveted by the 1974 novel "The Mote in God's Eye," by Jerry Pournelle and Larry Niven, in which an alien spacecraft propelled by solar sails visits humanity. Today, Johnson ...

What drives us to be anonymous online?

University of Queensland researchers have found there are two key reasons people choose to be anonymous online—self-expression or toxic behavior.

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