How big is the black hole at the center of our galaxy? And is it a sphere?

Answer 1

For years scientists said the black hole contained about 2.6 million times the mass of the Sun. They now believe the figure is somewhere between 3.2 million and 4 million solar masses.And a new study suggests all that mass, confined to an area about 10 times smaller than Earth's orbit around the Sun, spins around about once every 11 minutes. The Sun, for comparison, takes about a month to make a revolution on its axis. Earth spins once every 24 hours.Black holes can't be seen or measured directly, because light passing near them gets trapped. So astronomers measure a black hole's mass by observing the orbital speed of nearby stars. Yes....

Answer 2

Around 3-4 million solar masses. That's not particularly large. The Schwarzschild radius is about 10-12 million kilometers.

Which means that a ten to fifteen times larger one would fit into Earth's orbit.

Since the black hole is rotating, it is not exactly a sphere. But then, the geometry around a black hole is not that of a regular sphere, anyway. We just think of it like a sphere, but that is not correct on any level of approximation, even though it has spherical symmetry, the radial dependence of curvature makes it an object with a very, very different dynamic than a hard sphere would have.

Answer 3

It is theorized that a black hole exists at the center of the Milky Way but it has yet to be proven. There are ways to detect black holes and these methods indicate a possible black hole.

Black holes are collapsed massive stars and as such they are spherical. Not all black holes are spinning.

The size of black holes are also today only theorized.

A massive star that collapses into a neutron star has a typical diameter of tens of miles. A more massive star that collapses into a black hole has similar properties except that infinite gravity means normal physics no longer apply. The object theoretically collapses to a radius of zero. Leaving behind what is called a singularity.

More evidence needs to be obtained to answer your questions with certainty.

Answer 4

They estimate the diameter of this black hole is three miles. All black holes would be near perfect spheres.

Answer 5

All black holes are a dimensionless point. There is no true 'size', although the amount of mass within it may be many millions of times that of the sun.

Many miles out from the point of a black hole is the Event Horizon - which will *always* be a sphere. The Event horizon is the point at which "normal" space ends, and the realm of the black hole begins.

Answer 6

It's not a hole. It just looks like a hole. It's actually a burned out star with such density that any light from other stars that comes too near it, gets sucked into it. It's probably smaller than our moon. And lauren j, They don't call it Uranus any more because it sounds tacky. They renamed it Urectum!

Answer 7

It is about the size of Uranus.... Ha get it Your- anus. and you asked a space question. Get it ? Ha , I "crack" myself up. Ha there I go again . Part 2 of your question. I think your black hole is not so much black and it is more like miles of tubing, not a sphirical shape. You should look more often, that is what mirrors are for.

Answer 8

really big