I believe Blackhole in MilkyWay expanded to 3 million mile .diameter. What was its diameter 25,800.years ago?

Question

I would also like to know if it's believed the Mily Way had a Blackhole 25,800. years ago. Did this phenomenon move into our Galaxy or was it always here. If the Universe is expanding then the Galaxy is also so it stands to reason the Black hole has also expanded. When our sun passed through the Galactic Equator 25,800. years ago, I believe the Blackhole either was not yet there or was much smaller than the sun's diameter.

Answer 1

Black holes do not exist except in the minds of some of the beholders. The Universe (there are no multiverses) does not expand and there are no light years. The Sun rotates around the Earth. The real Scientists went to the moon based on accurate data; atom bombs are based on accuracy not conjecture. The questions you are asking are as in the old Monkey Mythology theory, based on the latter and nothing but pure guesswork and predictions.

Answer 2

Couple of questions here:

1. We believe that there may be a massive black hole at the center of our Milky Way galaxy, but we're unable to observe its size or other exact measurements due to dust clouds in space between us and the center. So we are not sure of its diameter, expansion rate, or size 25,800 years ago.

2. The universe is indeed expanding, but the expansion is taking place between the galaxies. A black hole may expand due to increased mass falling into it, but it would not expand in our frame of reference simply due to the general expansion of the universe.

3. Our solar system does move through the galaxy, and the galaxy itself rotates and moves through space, but we are not thought to have passed through the center of the galaxy itself 25,800 years ago - we're approximately that many light-years away, but that's a measurement of how long it would take light to get to us from there, not an indication that we actually came from there ourselves.

4. If our solar system passed near a black hole of even the Earth's diameter (representing a much larger mass), it would likely disrupt the orbits of our entire system, and depending on placement of the sun and planets, could even swallow the sun and the planets entirely. Passing near a black hole of the sun's diameter would definitely swallow us whole (although it would take a while).

Hope this helps -