Now it's over, we can say it: a biggish asteroid passed by Earth a short while ago. About the size of a minibus, the space rock, known as 2023 BU, whipped over the southern tip of South America ...

It's the first of two expected asteroid fly-bys this week. The European Space Agency issued an alert for the 27-inch asteroid at 4:27 a.m. ET, with the agency saying the celestial rock would ...