The nature of the first black hole discovered, Cygnus-X1, clarified thanks to Ixpe
The X-ray source called Cygnus X-1 is a legend in the world of astrophysics and X-ray astronomy. It had been the subject of a bet in 1975 between nothing less than stephen hawking and the Nobel Prize in Physics Kip Thornebetting that Hawking will concede losing in 1990. It is towards this source of X-rays … Read more