Special & General Relativity Questions and Answers
Why do the laws of physics break down in singularities?
Because particular quantities that define the physics ( velocity, density, mass, size) no longer have any finite meaning. The relevant quantities either become 'zero' or infinite with nothing in between in a mathematical sense.
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All answers are provided by Dr. Sten Odenwald (Raytheon STX) for the NASA Astronomy Cafe, part of the NASA Education and Public Outreach program.