标签: seyfert

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天龙座的三重星系

2023年7月1日 Three Galaxies in Draco Image Credit & Copyright: David Vernet, Jean-François Bax, Serge Brunier, OCA/C2PU Explanation: This tantalizing trio of galaxies sometimes called the Draco Group, is located in the northern constellation of (you guessed it) Draco, the Dragon. From left to right are face-on spiral NGC 5985, elliptical galaxy NGC 5982, a...

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星系M106

2021年04月09日 Messier 106 Image Credit: NASA, Hubble Legacy Archive, Kitt Peak National Observatory; Amateur Data & Processing Copyright: Robert Gendler Explanation: Close to the Great Bear (Ursa Major) and surrounded by the stars of the Hunting Dogs (Canes Venatici), this celestial wonder was discovered in 1781 by the metric French astronomer Pierre Mech...