From high schoolers exhibiting some "Disturbing Behavior" and vampires rooming the night in "Blade, " there's no end to the horror movie spin-offs.

CNN: Putting the scare in summer movies

On a good night, this camera will be able to map a swathe of sky approximately the size of the Plough's blade (or, for North Americans, the Big Dipper's bucket).

ECONOMIST: The Sloan star survey