Earth from space: Gravity waves spark pair of perfect cloud ripples above uninhabited islands
![Earth from space: Gravity waves spark pair of perfect cloud ripples above uninhabited islands](https://cdn.mos.cms.futurecdn.net/6QkQ7zshxCryZVGd35nxQg.jpg)
This 2023 astronaut photo shows a pair of perfectly aligned "wave clouds" rippling above the Crozet Islands in the Southern Ocean. The unusual patterns are the result of changes in temperature caused by gravity waves.