AS LONG AS THEY’RE JUST PASSING THROUGH: Earth Gets A Rush Of Weekend Asteroid Visitors. “An asteroid as big as a city block shot relatively close by the Earth on Saturday, the latest in a series of visiting celestial objects including an asteroid the size of a bus that exploded over Russia last month, injuring 1,500.”

Key quote: “The scary part of this one is that it’s something we didn’t even know about.”