Astronomers from the European Southern Observatory (ESO) and other institutes discovered a black hole lying just 1000 light-years from Earth.
The previous closest black hole is probably about three times further. It is about 3,200 light-years, according to a study published in the journal Astronomy & Astrophysics in early May this year.
When they were analyzing their observation, they discovered it hiding in the system. It is located in the constellation Telescopium in the Southern Hemisphere.
Like the other discovered blackholes in the past, this one close to earth is about 25 miles (40 kilometers) in diameter. Researchers said there was something about four or five times the mass of our sun pulling on the inner star.
In addition, observations also showed that one of the two stars orbits the invisible object every 40 days, while the other star hangs out by itself at a much greater distance from the black hole.
Astronomers said it is one of the first stellar-mass black holes found in our galaxy that does not release bright X-rays while violently interacting with its companion stars.
They assumed there must be hundreds of millions of black holes in the System, researchers concluded in their study.