Welp, time to fess up: I've been lying to you for years. Years!

I've been saying the Milky Way has a flat disk. And it kinda is, but it also very much isn't. It's warped. And corrugated!

Astronomers Catch the Milky Way Doing the ‘Wave’

Observations show the disk of our galaxy is not flat but warped and waving. Astronomers are still working out the reasons why

Scientific American (www.scientificamerican.com)

#DoTheArmWave