Did you see that bright streak of light in the sky last night?  Several videos of an object falling through the sky were posted on Twitter last night, and many are  wondering what it was. CBS 12 meteorologist Zach Covey says it was an asteroid traveling 16-thousand miles an hour called 2021 GW4. It came within 93-hundred miles of Earth, and he Tweets it was one of the closest approaches in recent memory.