SciFi never completely recovered from the Mariner probes demonstrating that Mars was a dry, cratered planet, utterly lacking in canals. Though later probes showed the sign of past water flow, scads of classic sf from the 30s-50s was tossed out the windows.
Well, scientists are at it again, proposing that black holes, a staple of sf for decades, may not really exist. Well, poop on them.
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