They spotted a bunch of stars orbiting around in the center at crazy speeds around what appears to be nothing but the only thing that could have that much mass to swing those stars around like moons would have to be insanely dense which could only be justified by being a super massive black hole
Astronomers hypothesize the presence of a supermassive black hole at the center of the Milky Way because of the high velocities exhibited by stars orbiting the region and the intense radiation emitted, which is characteristic of black hole activity. Additionally, observations of other galaxies suggest that supermassive black holes are common in galactic centers.
Astronomers hypothesize that a massive black hole lies at the center of M87 because of the high speeds of stars orbiting the center, which indicate a very massive object. Observations also show a jet of energetic particles emanating from the center, which is commonly associated with supermassive black holes. Additionally, the size of the dark central region in M87 matches what is expected for a black hole event horizon.
There is actually quite strong evidence for such a black hole - both from x-ray observations, and by observing the movement of nearby stars. The movements of nearby stars indicate that they are orbiting an object with about 4 million solar masses, and since this mass is concentrated in a very small space (the apoapsis of some of those stars is fairly close to the object), the only reasonable explanation, according to current astronomical knowledge, is a black hole.
Not "the" quasar, but "a" quasar - there are many. A quasar is associated with a supermassive black hole, and those are generally at the center of galaxies.
Perhaps you mean "thought to be"? - It is believed that all, or most, galaxies have a supermassive black hole at their center.
Astronomers hypothesize the presence of a supermassive black hole at the center of the Milky Way because of the high velocities exhibited by stars orbiting the region and the intense radiation emitted, which is characteristic of black hole activity. Additionally, observations of other galaxies suggest that supermassive black holes are common in galactic centers.
A blazar is an elliptical galaxy with a supermassive black hole at the center.
A Supermassive black hole .
Astronomers hypothesize that a massive black hole lies at the center of M87 because of the high speeds of stars orbiting the center, which indicate a very massive object. Observations also show a jet of energetic particles emanating from the center, which is commonly associated with supermassive black holes. Additionally, the size of the dark central region in M87 matches what is expected for a black hole event horizon.
At the center of every galaxy is a supermassive black hole.
At the center of every galaxy is a supermassive black hole.
The supermassive blackholes at the center of galaxies.
It seems that just about EVERY galaxy has a huge ("supermassive") black hole in its center.
There is actually quite strong evidence for such a black hole - both from x-ray observations, and by observing the movement of nearby stars. The movements of nearby stars indicate that they are orbiting an object with about 4 million solar masses, and since this mass is concentrated in a very small space (the apoapsis of some of those stars is fairly close to the object), the only reasonable explanation, according to current astronomical knowledge, is a black hole.
Yes, many galaxies have supermassive black holes at their centers.
Supermassive black holes can be found at the center of most galaxies, including our own Milky Way galaxy.
The best evidence for a supermassive black hole in the center of the Milky Way galaxy comes from observations of the orbits of stars near the galactic center. These stars move at high speeds around an invisible object with a mass millions of times that of the Sun, indicating the presence of a supermassive black hole.