PSR J0108-1431 represents the closest known ______________ relative to Earth?
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Answer: D. Pulsar
Explanation
PSR J0108-1431 emits regular pulses of electromagnetic radiation as it rotates rapidly in space. Astronomers have calculated its distance to confirm it is one of the closest known pulsars to Earth. This dense stellar remnant represents a highly magnetized neutron star spinning at incredible speeds. Pulsars form when massive stars exhaust their nuclear fuel and collapse violently in supernova explosions. The extreme gravity of a neutron star compresses solar masses of matter into a sphere only miles wide. Radio telescopes detect the sweeping beams of radiation emitted by pulsars across vast interstellar distances.
A black hole possesses gravitational pull so intense that even light cannot escape its event horizon boundary. Red giant stars are expanded luminous aging stars that have exhausted hydrogen fuel in their cores. Quasars are extremely luminous distant active galactic nuclei powered by supermassive black holes far away.
- Subject
- Everyday Science
- Category
- Everyday Science
- Topic
- —
- Difficulty
- medium
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