Source: NOVA: "Galileo's Battle for the Heavens" This resource was adapted from NOVA: "Galileo's Battle for the Heavens." The first telescopes, invented in 1608, consisted of two simple concave and ...

Galileo, Europe’s novel satellite navigation system, is getting ready for launch, preparing the way for the delivery of a new and advanced global civil positioning service for the benefit of citizens ...

A light-colored object on a dark background appears larger than a dark object on a light background, but until recently, no one knew why. Now, a study suggests that a difference in how the brain's ...