news hardware What is this black hole 10 times heavier than the sun discovered near Earth?
Scientists have just discovered a black hole near Earth, the closest to us. It is so dark that it is not possible to observe it with traditional tools. This is a great find.
A nearby ultradense black hole
At first glance, this announcement seems very worrying for the Earth. Actually, when we talk closely, it is 1500 light years away. Which means that it would take 1500 years at the speed of light to reach this black hole. For comparison, it takes 8 minutes between Earth and the sun. On the scale of the Universe, on the other hand, it is very small, this is barely 1% the size of our galaxy.
This black hole has not yet been observed. One of the reasons is its density so high that it absorbs light. To compare it to a known star, this black hole is 10 times heavier than the sun, but 100 million times smaller. This density prevents us from observing it, because we capture light during space observations.
What sets it apart from other observed black holes is that it is silent. It does not devour other stars or gas clouds. This is the case of the twenty black holes observed to date. These density giants release a large amount of X-rays, more or less easily observable depending on the distance. As a result, this newly discovered black hole is invisible.
Observe what is not observable
This black hole has been talked about for a long time, but it is impossible to scientifically prove the phenomenon. We observe a star that has a particular and extremely fast orbit around “nothing”. This is where scientists wondered if it wasn’t a black hole.
Astrophysicists have thus made their calculations to prove the truth of this theory. The results fell and indeed it is a black hole of impressive density. But it is also its proximity to us that fascinates. Scientists find the phenomenon so powerful that the theory of two black holes orbiting each other is possible.
Discoveries of dormant black holes are only in their infancy and there could be another dozen discovered in the next few days. This would suggest that they are much more frequent than traditional voracious black holes. The Gaia telescope has made many observations that could lead to important discoveries.
Astrophysicists estimate that there are still 100 million black holes to discover in our galaxy. An astronomical figure that puts into perspective the size of the Earth and Man in relation to the Universe. We are only at the beginning of the discovery of black holes. Why not imagine discovering even smaller ones at the gates of our Earth?