Got any cool photos from your latest trip? Astronaut Don Pettit has been to space four times: most recently, he spent 220 days on the International Space Station, returning to Earth in April 2025. Pettit grew space plants, printed 3D metal parts, and studied human health during his time in orbit. When he wasn't working on more formal studies, though, he found plenty of time for what he calls the "science of opportunity:" exploring and experimenting with his surroundings through a combination of science and art. This image, one of the countless photos Don Pettit took during his latest trip to the ISS, shows off the stars of deep space set against the clouds of Earth, lit by the red upper atmospheric airglow. This photo was a 20-second exposure. Image description: Earth and space, as seen through a circular window. Points of light fill the top half of the image; near its middle, a fiery red line arcs above the blurry yellow-green Earth. A SpaceX Dragon spacecraft can be seen at the bo...