'Karl Schwarzschild has a type of this named after him; Schwarz is a clue'
Black hole
ASTRONOMERS: Karl Schwarzschild has a type of this named after him; Schwarz is a clue
Karl Schwarzschild has a type of this named after him; Schwarz is a clue
Karl Schwarzschild has a type of this named after him; Schwarz is a clue
ASTRONOMERS
Black hole
ASTRONOMERS