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Q&A How to tell a blackhole from a neutron star covered entirely by Dyson sphere painted in vantablack?

In a galaxy far far away... M6760 (I made it up) is an unusually massive neutron star billions of light years away and it is surrounded by a spherical Dyson sphere painted in new improved formula v...

9 answers  ·  posted 5y ago by user6760‭  ·  last activity 5y ago by user6760‭

Question technology dyson-spheres black-holes