Andrew J. Steinmetz
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ajsteinmetz.com
Andrew J. Steinmetz
@ajsteinmetz.com
Physics PhD, fmr. Global Professor at the University of Arizona. Talks about physics, astronomy and other sciences! (views my own) ⚛️🔭🧪🧮 https://ajsteinmetz.github.io/
Oppenheimer-Snyder collapse (Penrose coordinates) shows how #BlackHoles form with radius (x-axis) & time (y). The star's surface (white) becomes the "antihorizon" of the BH (upper half diamond) with a singularity (cyan). #Physics #Astronomy #Science 🧪🔭⚛️

More info: jila.colorado.edu/~ajsh/bh/col...
September 16, 2025 at 12:24 AM