it's possible that as much as 20 percent of it could have reached the Earth's surface
Tiangong-1
The odds you will be hit are about 1 million times smaller than the odds of winning the Powerball jackpot
One remote danger from the Tiangong-1 is that someone will find & pick up a piece of its debris that’s covered in a corrosive substance
Keep an eye to the sky from January next year