Pair of asteroids make early-morning passes of Earth

If you're reading this, the Earth is intact. That's good news, since a pair of asteroids made some reasonably close approaches to our planet this morning. The rocks, named 2019 QS and 2019 OU1, both safely sped past Earth on their way around the Sun. Of the two rocks, QS is the smallest, measuring between 30 and 60 meters in width. OU1 is quite a bit larger, and is estimated to be as large as 170 meters across. Neither object meets the "planet-killer" criteria, but both of them could do a fair a...