Scientists from the EHT (Event Horizon Telescope), a global network of radio telescopes and observatories, have managed to capture the most intelligent images taken by a black hole in the Milky Way. Way, the galaxy where the Solar System is and, therefore, us. planet exists.
The announcement of the image of Sagittarius A *, as the black hole has been named, was made this Thursday (12) at an international event with scientists from EHT and ESO (European Southern Observatory).
When looking at the picture, people who do not follow astronomy may find it strange, because it is a bit blurred. This is because this “picture” is the result of thousands of captures being made, including differences in the movement of the black hole and the change in brightness.
In front, the black holes are very thick areas with strong forces that do not affect them. Something that scientists have always thought of is the study of the “event horizon” or the non-return direction, which makes the area between the center and the inside of the hole – a once something enters that, it can not run further.
What is attractive in Sagittarius A * is in fact its similarity to Earth. When the black hole M87 discovered in 2019 (its image went viral at the time) was 50 million light-years from Earth, one of the current announcements is only 25,000 light-years.
Do not say Sagittarius A * less than M87 *. One of our “first gardens” is 4 million times the sun, while the second is nearly 7 billion times its size. Its low resolution is one of the problems for capturing its image, which has brought together several telescopes around the world.
As the black holes do not emit light, the major challenge in having the image of them is the “silhouette” caused by the collision of light in gravity. As a result, the only way to get a “picture” of them is to use a microwave spectrum, combining the energy of different monitors.