Well, darling, a nebula is a big ol' cloud of dust and gas in space, while the Crab Nebula is a specific nebula located in the constellation Taurus. So basically, it's like saying a nebula is a generic term for a cloud in space, while the Crab Nebula is a specific cloud that got its own fancy name. Hope that clears things up for ya, sugar!
The Crab Nebula, of which the Crab Pulsar is a part of, got its name in 1840 when the William Parsons, made a drawing of the nebula that he thought looked like a crab. Pretty simple if you think about it.
"The Crab" is a nebula.
The crab nebula.
The Crab Nebula or SN1054 is still visible with telescopes.
The crab nebula is the debris formed in the supernova explosion.
The Crab Nebula is a supernova remnant and pulsar wind nebula.
The Crab Nebula was formed when it's host star exploded as a supernova [See related question]
Pulsars were discovered in the Crab Nebula, a supernova remnant, in 1967. The Crab Pulsar is a neutron star at the center of the nebula that emits beams of radiation, producing regular pulses of light. The high-energy particles and magnetic fields in the nebula power the pulsar's emission.
The Crab Nebula was discovered in 1731 by John Bevis, an English astronomer. It was later rediscovered and cataloged by Charles Messier in 1758.
The Crab Nebula's longitude is 184.6 and its latitude is -5.80, in the third galactic quadrant.
The Crab Nebula is a supernova remnant resulting from a massive star explosion, while the Orion Nebula is an emission nebula where new stars are forming. The Crab Nebula is located in the constellation Taurus, while the Orion Nebula is located in the constellation of Orion.