A shadow is a dark shape made when light is stopped or blocked by an object or a person. Some objects are opaque such as stone, metal and wood. This means light doesn't travel through them.

A child was hospitalized after being hit by one of several drones that crashed into each other during a Saturday night aerial ...

One video captured a blue object with a glowing light hovering in the Philadelphia sky, while another recorded the object's descent into the Delaware River. These videos piqued public interest ...