Beating heart of the Crab Nebula captured by Hubble
The neutron star at the very center of the Crab Nebula has about the same mass as the Sun but compressed into an incredibly dense sphere that is only a few miles across. Spinning 30 times a second, the neutron star shoots out detectable beams of energy that make it look like it’s pulsating.
The NASA Hubble Space Telescope snapshot is centered on the region around the neutron star — the rightmost of the two bright stars near the center of this image — and the expanding, tattered, filamentary debris surrounding it. Hubble’s sharp view captures the intricate details of glowing gas, shown in red, that forms a swirling medley of cavities and filaments. Inside this shell is a ghostly blue glow that is radiation given off by electrons spiraling at nearly the speed of light in the powerful magnetic field around the crushed stellar core.
The neutron star is a showcase for extreme physical processes and unimaginable cosmic violence. Bright wisps are moving outward from the neutron star at half the speed of light to form an expanding ring. It is thought that these wisps originate from a shock wave that turns the high-speed wind from the neutron star into extremely energetic particles.
When this “heartbeat” radiation signature was first discovered in 1968, astronomers realized they had discovered a new type of astronomical object. Now astronomers know it’s the archetype of a class of supernova remnants called pulsars — or rapidly spinning neutron stars. These interstellar “lighthouse beacons” are invaluable for doing observational experiments on a variety of astronomical phenomena, including measuring gravity waves.
Observations of the Crab supernova were recorded by Chinese astronomers in 1054 A.D. The nebula, bright enough to be visible
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