Definitions for "Crab Nebula"
a remnant of a supernova detected first in 1054 AD
a cloud-like nebula observed in the Crab constellation, the remnant of a supernova explosion observed in China in 1054. It contains a very rapidly rotating (and hence, young) pulsar, which is probably the remnant of the supernova. The emissions of radio waves and light from this nebula suggest the presence of high energy particles.
The Crab Nebula (M1) is a cloud of intergalactic gas and dust. It is the remnant of a supernova that was seen on Earth in 1054. The Crab Nebula can be found in the constellation Taurus.