Raindrops Are like Tiny Asteroid Strikes

Rainshowers are a lot more dramatic if you imagine every drop is a tiny asteroid imperiling miniature dinosaurs or sending little astronaut Ben Afflecks into space. It turns out your fantasy wouldn't be that far off, aside from that last part. Researchers have found startling similarities between asteroid craters and the fleeting indentations left by raindrops on sand. At the University of Minnesota, physicist Xiang Cheng and three undergraduate students scrutinized what happens when a dr