The supermassive black hole Sagittarius A*, which is situated at the center of our Galaxy Milky Way, is located at a distance of 25,800 light-years from Earth. That is, it is 2,000 light-years closer than previously thought.
The new data was discovered thanks to a Japanese radio astronomy project VERA. It has been gathering data from telescopes across Japan as well as other studies on this topic for the last 15 years using the interferometry technique. Japanese scientists were able to determine the location and speed of movement of about 99 points in the Milky Way.
Also, a new model of the galaxy, compiled by the Japanese, showed that the solar system is moving around the galactic center at a speed of 227 km/s (141 miles). Before that, it was widely believed that it was 7 km/s slower.
Sagittarius A* is located in the center of the galaxy and has a mass roughly 4 million times that of the Sun. Its radius is no more than 45 astronomical units. For their exploration of this supermassive black hole, physicists Reinhard Hansel and Andrea Gez received the 2020 Nobel Prize. They have been observing the radio source since the 90s.
This doesn’t mean that we are about to collide with the black hole. This fac simply means that a more accurate model of the Milky Way now exists.
VERA is now hoping to make the new model even more accurate by gathering data from more radio telescopes across Japan, China, and Korea.