How far is the nearest black hole from the earth?

It is found that the nearest black hole is only 1000 light-years away from the earth.

Astronomers have discovered the nearest black hole so far-only 1000 light years away. Its mass is about four suns, which is located in the star system visible to the naked eye and belongs to the so-called? Silence? One of the black holes. The researchers reported in the journal Astronomy and Astrophysics:

Thomas Livinius of the European Southern Observatory (ESO) and his team were lucky to find black holes. At first, they studied the motion data of a near binary system, which is 1000 light years away. The binary system contains HR 68 19, which can be seen with naked eyes from the sky in the southern hemisphere.

As a result, when they observed the movements of the two stars with a telescope at La-Silla Observatory in Chile, they noticed some strange phenomena: according to their actual orbits, there must be a third huge celestial body in the system, and this huge third celestial body has at least four solar masses, but it cannot be observed on the telescope. The researchers finally think that this can only lead to one conclusion:? An invisible object with at least four suns in mass can only be a black hole. ? Livinius explained.

At present, no black hole is closer to us than it is.

First of all, this binary system contains the black hole closest to the earth as we know it. Previously, the black hole in the dual system V6 16 1 Monocerotis, which is 35,000 light years away from us, is the nearest black hole we know. Co-author Petr Hadrava said: We were surprised to find that this is the first black hole star system that can be seen with the naked eye. ?

Just the tip of the iceberg?

The second feature: the black hole in HR 68 19 is a star-mass black hole, which will not actively devour matter, so it will not emit radiation. Researchers think HR 68 19 is just? Tip of the iceberg? They believe that there should be a large number of such inactive black holes in the Milky Way.

In fact, the research team has found another one? Silent evidence of black holes. Co-author Marianne Heida said: Although we need more observation to confirm this, we did find another system called LB- 1, which may be such a triple system. It's a little far from the earth, but it's still very close in astronomical figures. ?

The search continues.

According to this, astronomers believe that searching in binary systems with abnormal orbits may be a good way to find more such black holes. Livinius said: There should be hundreds of millions of such black holes in the Milky Way. We know little about them, but if we know how to find them, we should be able to find them better. ?