Meteor showers are caused by Earth passing through the rubble trailing a comet or asteroid as it swings around the sun. This debris, which can be as small as a grain of sand, leaves behind a ...
Santa Claus will have to be "mirroring" on his sleigh ride around the world. NASA has warned of a gigantic asteroid that will pass close to Earth on Ch ...
Most meteor showers are caused by the debris of a comet or asteroid that once crossed paths with Earth. The Ursids come from the debris left behind by comet 8P/Tuttle, which last visited the inner ...