I find the sky endlessly fascinating, but only get to see it from underneath. Satellites, of course, have the job of sending useful data, yet the images can also be stunning. And apparently, Earth-watching is a favorite past-time of astronauts on the International Space Station. ESA astronaut Alexander Gerst tweeted this picture a few days ago. Isn't it beautiful? Really, it could be a painting.

Mona Evans
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