What is the approximate diameter range for extremely compressed stellar remnants known as neutron stars?
Answer
Diameters as small as 20 to 40 kilometers
The range of stellar sizes encompasses everything from the colossal to the incredibly compact. On the smaller end of the spectrum are the remnants of dead stars. White dwarfs shrink down to roughly the size of Earth. However, neutron stars represent an even more extreme state of compression, possessing diameters that can measure as little as 20 to 40 kilometers. This contrasts sharply with the upper limit, where supergiants can reach diameters around 900,000,000 kilometers, sometimes 650 times the Sun's diameter.
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