Assertion: neutron's radius | /r/HasProperty | 3gm/c2
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Source sentences:
text: If the radius of the neutron star is 3GM/c2 or less, then the photons may be trapped in an orbit, thus making the whole surface of that neutron star visible from a single vantage point, along with destabilizing photon orbits at or below the 1 radius distance of the star.