Has anyone else seen today's Google doodle? How would you describe what's happening in it?

1 Answer
May 13, 2015

The Google doodle today (May 13, 2015) is pretty cool!

enter image source here

Google tells me it celebrates Danish seismologist Inge Lehmann's 127th birthday.

Curious if anyone has a (scientific) way of explaining what's going on in the image. Just for fun!