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These rings might look like colorful, interstellar rainbows, but for astronomers they’ve helped solve a mystery. By studying these rings, which were captured using NASA’s Chandra X-ray Observatory, astronomers were able to determine how far Circinus X-1, a double star system in the plane of our galaxy, is from Earth. Find out more on time.com. (Photo by @NASA—CXC/U. Wisconsin/S. Heinz).

These rings might look like colorful, interstellar rainbows, but for astronomers they’ve helped solve a mystery. By studying these rings, which were captured using NASA’s Chandra X-ray Observatory, astronomers were able to determine how far Circinus X-1, a double star system in the plane of our galaxy, is from Earth. Find out more on (Photo by @NASA—CXC/U. Wisconsin/S. Heinz).

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