Questions with the keyword 'black hole'

• when i was watching big bang theory on netflix sheldon and leonard had a theory that could only be tested with a by game45day to Souvik, Sabine, Maria, Armin Comments: (No comments so far )
• What Is A Blackhole by EpicDuck27 and 2 others. to John, Souvik, Sabine, Maria, Armin Comments: (So far, one comment )