"YU55 poses no threat of an Earth collision over, at the very least, the next 100 years," says Don Yeomans, manager of NASA's Near-Earth Object Program Office at JPL.
Let our great grandkids worry about it.
Mark Frauenfelder is the founder of Boing Boing and the editor-in-chief of MAKE and Cool Tools. Twitter: @frauenfelder. His new book is Maker Dad: Lunch Box Guitars, Antigravity Jars, and 22 Other Incredibly Cool Father-Daughter DIY Projects