[noncount] : a quality that makes you continue trying to do or achieve something that is difficult. 1  What he lacked in talent he made up for in determination. 2  dogged/fierce/steely/stubborn determination.
The first modern solution of general relativity that would characterize a black hole was found by Karl Schwarzschild in 1916, although its interpretation as a region of space from which nothing can escape was first published by David Finkelstein in 1958.
Black Holes: Facts, Theory & Definition. 1  Stellar black holes â small but deadly. 2  Supermassive black holes â the birth of giants. 3  Intermediate black holes â stuck in the middle. 4  Black hole theory â how they tick. 5  Interesting facts about black holes. 1  If you fell into a black hole, theory has long suggested that gravity would stretch you out like spaghetti, though your death would come before you reached singularity. 2  Black holes do not suck.. 3  The first object considered to be a black hole is Cygnus X-1.