sci fi

NASA Ranks The Most (And Least) Realistic Sci-Fi Films [VIDEO]
A helmeted robot lands a flying saucer in a park in Washington, D.C. Dinosaurs freely roam a small isle off of Costa Rica. The Mayan calendar accurately predicts the fiery end of the world. Are the plots of sci-fi movies really that far-fetched?
Of course they are. But NASA, whose space engineers are…