Robert Lea is a science journalist in the U.K. whose articles have been published in Physics World, New Scientist, Astronomy Magazine, All About Space, Newsweek and ZME Science. He also writes about science communication for Elsevier and the European Journal of Physics. Rob holds a bachelor of science degree in physics and astronomy from the U.K.
I would argue that the most fascinating and mysterious objects in the cosmos are black holes. These pockets in the fabric of spacetime are anchored by an infinitely dense and infinitesimally small concentration of mass: A singularity. We simply do not know what lies beyond a black hole's event horizon — the boundary beyond which light can't cross — and perhaps never will. These objects are simply too extreme for our brains to lightly comprehend and for our bodies to withstand.
The Event Horizon Telescope captured this image of the supermassive black hole in the center of the galaxy M87 and its shadow. The black hole in question is M87*, located around 55 million light-years away with a mass of about 6.5 billion suns, making it much more massive than our galaxy's supermassive black hole"The image of M87* brought a lot of broader interest to black holes and science, and astronomy, in general," Issaoun said.
On May 12, 2022, the EHT Collaboration managed to reveal the first image of Sgr A* created using data collected in 2017. Despite Sgr A* being much closer to Earth, it was tougher to image because the material surrounding it also races around at near light-speed, but Sgr A* is much smaller than M87*, so full orbits were completed almost quicker than the eye of the EHT could see.
"Seeing the ring-down signal, as predicted from the theory of two pretty massive solar mass black holes merging together, was a pretty incredible feat," Issaoun agreed.The discoveries discussed so far have concentrated on supermassive black holes, or black holes that sit at the hearts of galaxies and influence the realms' development. These cosmic titans are born from a merger chain of increasingly larger and larger black holes. This means they end up with incredibly huge masses.
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