M1 is the Crab Nebula, the nebulous remnant of a supernova explosion witnessed on Earth in 1054. A small telescope is needed to see it. M45 is more usually called the Pleiades. This open cluster of young stars can be seen clearly with the naked eye.
This constellation is home to another famous open cluster, the Hyades. Much closer to us than the Pleiades, the Hyades form the "V" shape of the bull's head.
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