The Milky Way moves through space at a speed of 600 km/sec, oscillating slightly - as if it were flapping its wings as it flew through space.

The Milky Milky Way Way moves moves through through space space at at a a speed speed of of 600 600 km/sec, km/sec, oscillating oscillating slightly slightly - - as as if if it it were were flapping flapping its its wings wings as as it it flew flew through through space.