Ever-Growing USA on MSN1h
Astronomers Discover Rare Nine-Ring Galaxy, Challenging Galactic Collision TheoriesA newly discovered galaxy is challenging what scientists thought they knew about galactic collisions. Located 567 million ...
Artist's concept of light flares along Sag A*'s accretion disk. (Credit: NASA, ESA, CSA, Ralf Crawford (STScI)) ...
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