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Q&A Let's float an island on an astrophysical jet

An astrophysical jet is a stream of particles emitted by matter falling into an supermassive star/black hole, travelling at up to 80% the speed of light. A troll with a portal gun (which places p...

2 answers  ·  posted 6y ago by System‭  ·  last activity 6y ago by System‭

Question astronomy reality-check