Physics, Astronomy & Cosmology / Re: What's the brightness of a star 16 times wider but half as hot as the Sun?« on: 21/04/2021 10:50:12 »
Quote from: Petrochemicals
brightness of a star...I am not sure of neutrons.The fusion reactions that generate energy in the core of a star tend to produce gamma rays and positrons, not neutrons.
- Perhaps you are thinking of uranium fission reactors on Earth, which do produce neutrons?
Even if a star did emit neutrons (eg during a supernova): neutrons have a half-life of around 15 minutes, so they would decay well before they reached us over interstellar distances (even if they were traveling close to the speed of light).
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