The supermassive black hole heading towards our galaxy

This would be the second closest black hole to us and it has been in the news these days by many media outlets and I know that the headline is a bit shocking, it has been discovered in a “dwarf” galaxy in the large Magellanic cloud that is located 158,200 light years from us, it is a “dwarf” galaxy in quotes because it has at least 20,000 million stars.

This galaxy is orbiting ours in the Milky Way, but it will end up merging with the Milky Way. And that will be in about 2000 million years, surely with the supermassive black hole that has been discovered now and that there in the center of the small galaxy will end up being brought towards Sagittarius A*, which is the supermassive black hole of our galaxy, the Milky Way that is in the center of our galaxy.

This black hole has approximately 600,000 times the mass of the Sun and Sagittarius a Star, ours is larger, it has 4.3 million solar masses, the new one is supermassive but it is one of the few supermassive ones that have less than a million solar masses, so it falls within the rarities of the Cosmos and that of our galaxy, although it has 4.3 million solar masses, it is among the supermassive but is relatively small, since there are some beasts of billions of masses. solar.

It is difficult to detect a black hole, of any size, if it is not eating matter it is practically invisible, it can also be detected if it alters the orbit of stars close to it, but in addition the superlatives are usually hidden in the galactic core, a place surrounded by many clouds of gas and dust which makes it even more complicated to detect it, so it is a very curious method that the researchers have used in this case to discover this new supermassive black hole.

It turns out that the researchers were studying hyper-fast stars, hyper-fast stars are stars that travel through the cosmos at such a speed that they will end up leaving the galaxy where they are in this case the Milky Way, the researchers analyzed 21 and discovered that 16 of them had reached their tremendous speed by having passed very close to Sagittarius A*, the supermassive hole at the center of our galaxy, but there were nine that surprisingly came from the large Magellanic cloud and the only explanation for a star to reach speeds hyper speed is to be pushed by the gravity of a supermassive black hole.

It is necessary for the star to pass very close to that supermassive black hole, and for it to be lucky enough not to be swallowed by it, but for it to gain a push, a speed, a gravitational push, the same thing we do with many spacecraft that get gravitational assistance, the same thing can happen to a star and it reaches a gigantic speed due to the gigantic gravity that a supermassive black hole has.

So the scientists discovered those nine hyper-fast stars that came from the great Magellanic cloud and they put their computers to work and the result in the end is that inside the great Magellanic cloud there had to be an object that weighs around 600,000 solar masses,

In summary, the merger between the Magellanic cloud and our galaxy would be 2 billion years from now, but there is a more curious fact, it turns out that in 2019 researchers from the University of Durhan in the United Kingdom calculated that the event would take place within 2 billion years, but they also calculated that due to the angle of entry and the situation of the Magellanic cloud and our galaxy, that fusion, that collision could end up expelling the solar system from our galaxy.

It could push the solar system out of the Milky Way, this will also happen much earlier than the expected collision with the Andromeda galaxy that is expected to occur within 4,000 or 5,000 million years and within 2,000 million years the Earth will not be habitable but the solar system will continue to exist and Mars and the moons of Jupiter would be a nice place where life might arise, presumably we humans if we are not stupid enough to To become extinct we will have evolved into other species or something else and we will have to do other things or we will have invented something to save the Earth, I don't know, in 2000 million years it is complicated.

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