A team of astronomers at the Smithsonian Astrophysical Observatory has done something never ever done before, despite many big achievements, a recent report has revealed.

While in 1781, Charles Messier had discovered a galaxy dubbed M87, though not sure if it was a galaxy. It is being said that the team has measured the radius of the black hole at the center of the galaxy.

The radius of the supermassive hole was measured with the help of the Event Horizon Telescope, the report finds. It has been told that the same was initially taken by the team so as to observe the M87 galaxy. It is being said that the black hole is some 6 billion times massive as compared to the Sun.

As per the findings, the telescope is a chain of different radio telescopes in California, Arizona and Hawaii. However, a picture of jets that were ejected from M87's black hole was captured by the telescope previously also. The same has this time helped in identifying that the black hole is 50 million light years away from the galaxy.

“The event horizon of a black hole is an exit door from our universe. You walk through that door, you’re not coming back”, said an astronomer.