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Astronomers have discovered the largest known structure in the universe, a clump of active galactic cores that stretch 4 billion light-years from end to end. The structure is a light quasar group (LQG), a collection of extremely luminous Galactic Nulcei powered by supermassive central black holes!
Plumes shot from a supermassive black hole flank the largest galaxy in the constellation Hercules. (Photo courtesy of NASA/ESA/RIT/NRAO/AUI/NSF)
NASA's Hubble Space Telescope has snapped a panoramic portrait of a vast, sculpted landscape of gas and dust where thousands of stars are being born. This fertile star-forming region, called the 30 Doradus Nebula, has a sparkling stellar centerpiece: the most spectacular cluster of massive stars in our cosmic neighborhood of about 25 galaxies.
This should blow some minds...space.com "Thousands of galaxies crowd into this Herschel image of the distant universe. Each dot is an entire galaxy containing billions of stars. This image was taken in a region of space called the Lockman hole, which allows a clear line of sight out into the distant Universe. This "hole" is located in the familiar northern constellation of Ursa Major, The Great Bear."