Starting a recurring thread on BLACK HOLES. From history to our modern understanding and, in between, any bizarre facts about it. 1. The idea of "dark stars" - from where light cannot escape - became obvious since we figured in the late 1600s that the speed of light is indeed finite. Here is a quote by philosopher-scientist John Michell from 1784.

(Source: Wikipedia)

1. Modest attempt to summarize PhD thesis in 10 tweets. It presented a theoretical, observational & astrophysical perspective on black holes 2. Thesis had 3 parts (10 Ch.): #NumericalRelativity (Einstein on supercomputers), blackhole search in #LIGO & #GravitationalWave universe👇🏻