The Cave Nebula isn’t small. It measures 50′ by 30′ — almost twice the size of the Full Moon. Look carefully for the deep, dark indentation in the nebulosity.

Location of the crab nebula in the constellation Taurus. (Image credit: Stellarium) Swiftly whirling . In November 1968, the core of the exploded star which gave rise to the material found in the ...