Picture of "Gravity waves" and Sprites on weather.com

[Jimster41]

This has to be a mistake right or just wacko. Not the sprites (which are awesome) but the reference to "gravity waves". I love spaceweather.site but those sure aren't gravity waves?

http://spaceweathergallery.com/indi...d=129854&PHPSESSID=pokk9dgvl9o46qaq17rq1jbms6

 

[Jonathan Scott]

Gravity waves are not the same thing as gravitational waves. They are waves in a fluid where the restoring force is gravity, such as ordinary ocean waves.

Wikipedia link: https://en.wikipedia.org/wiki/Gravity_wave

 

[Jimster41]

oh, right. guess I should have googled that one - I honestly hadn't heard of it.