@wonderofscience And about 20 minutes later it's sunrise again!

@wonderofscience one of the best uses of gif I've seen. Bravo!

@wonderofscience why take photos of a sunset on a cloudy day? You can't even see any of the other stars....

@wonderofscience It is remarkable how it gets completely dark, compared with the gradually we see into the atmosphere.

@wonderofscience Amazing illustration of how thin the atmosphere is.

@wonderofscience When you view the earth from the ISS can you see aircraft flying above the cloudbase