reflecting telescope Rudolph, Johann Gottlob (producer) Miltitz / b. Meissen order, 1750
Are Black Holes Mathematically Impossible? - When a massive star collapses under its own gravity to a single point in space called a singularity, it forms a black hole - the ultimate unknown. A void so dense and dark that not even light can escape it. But this fascinating object can never come into being in the first place, at least, according to Laura Mersini-Houghton, a physics professor.