Everything in our galaxy, the 13.6 billion-year-old Milky Way, orbits around Sagittarius A*, a massive black hole 26,000 light-years away.
- It is at the center of the Milky Way and its name is Sagittarius A*. Also Sagittarius A Star or SgrA*. It’s in constellation Sagittarius the Archer.
- Its mass is equivalent to about four million suns, in a very small volume.
- Its diameter is about 23.5 million km. That’s tiny talking about cosmic objects of this mass. Consider that the Milky Way itself is 100,000 light-years wide and 1,000 light-years thick.
- It is located according to the latest estimates, specifically 25,640 light-years from the Solar System.
- It is a Black Hole massive ones (there are many more massive ones in the cosmos), which is in a state of lethargy and does not have the ability of the others, the active ones, to convert matter into energy.
- It accounts for 99.9% of the mass in that area, which hardly leaves room for stars, gas, dust or other stellar objects.
- They were able to locate it by measuring the speed and orbit of nearby stars, which are clearly affected by its presence. A star hovering around it, S29, passed at a distance of 13,000 million kilometers (only 90 times the distance between the Sun and Earth) at a maximum speed of 8,740 kilometers per second.
- Also, overtaking Sagittarius A* is a disk of surrounding gas that extends from 5 to 30 light-years, occasionally feeding Sagittarius A* with matter, and this causes X-ray flashes. ».
- Its temperature rises to 18 million degrees Fahrenheit (10 million degrees Celsius).
- There are still many mysteries surrounding the huge black hole in our galaxy, but experts are not completely in the dark, today, Thursday at 15:00, new discoveries are expected with the Event Horizon Telescope. (Let’s expand the information).
Will Sagittarius A* swallow the Milky Way with Earth inside?
Black holes capture in their gravity any matter that gets too close. If the sun were trapped by the gravity of a black hole, Earth would remain stable and safe in its orbit in this new territory, albeit deprived of heat and light. So, humanly, we were going to give a little equal.
Many black holes consume material, gas and dust or material extracted from nearby stars, enveloping it in an accretion disk that the black hole gradually feeds on. However, Sagittarius A* seems to be in torpor. It is currently not swallowing enough matter to feed an AGN and a star or other object will almost have to hit it directly to be consumed.
However, this could change in about 4 billion years, when the Milky Way galaxy collides and merges with the stars of the neighboring Andromeda galaxy and provides another, potentially much larger, black hole, so everything could end up stuck in the galaxy. hole. And end.