Black holes have been nothing more than a figment of theoretical physics since 1916 with Albert Einstein's theory of general relativity where he described how gravity shapes the fabric of space and time but it wasn't until nearly 50 years later that the first black hole was discovered, the black hole at the centre of our galaxy Cygnus X-1, which not only proved their existence but also gave us a great understanding of how galaxies are formed.
And just over 60 years after that discovery, we took the first photograph of a black hole on Wednesday, the 10th of April 2019. Now, a new ground-breaking discovery has surfaced from an astrophysicist from Stanford by the name of Dan Wilkins who became the first person to observe light coming from behind a black hole at over 800 million light-years away. This was made possible thanks to the advances in X-ray telescope technologies.
Take a look at the video below by the YouTube channel: Physics Girl on What The New Black Hole Discovery Tells Us!