The sky is full of weird X-shaped galaxies. Here's why.

The sky is full of weird X-shaped galaxies. Here

Astronomers Crack Mystery of X-Shaped Radio Galaxies

Galaxy - Wikipedia

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Astronomers discover giant wave-shaped structure in the Milky Way

Photo of the day !!, Page 819

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Mysteriously bright flash is a black hole jet pointing straight toward Earth, astronomers say, MIT News

The New Story of the Milky Way's Surprisingly Turbulent Past

Dr. William Cotton, MD – Columbus, OH

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What is the Milky Way? It's our home galaxy

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An impossibly huge ring of galaxies might lead us to new physics. Here's how