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...