“Space is big. You just won't believe how vastly, hugely, mind-bogglingly big it is. I mean, you may think it's a long way down the road to the chemist's, but that's just peanuts to space.”

-- Douglas Adams

It took up most of my phone screen! Inconceivable!

Jk

Imagine orbiting this thing. Watching it. Watching 11 stars a day worth of matter spiralling into it: every 2 hours, you can look up and an entire star, power and mass equivalent to our life-giving sun, is now inside the event horizon, gone forever, lost to time itself.

couldn't you theoretically time travel forward by getting close to this super massive backhole changing out for a while then leaving, assuming you have the technology to do the leaving part

Does having a lot of white privilege help around black holes?

I'm not sure there's a other way to really describe the size of a black hike other than mass or the Schwarzschild radius (the radius to the event horizon.

It is likely to be neither. The last major or minor planet is not the edge of the solar system.

The size of the solar system is much larger than that.

One definition is the outer limit of the oort cloud. ( the furthest objects in orbit around the sun)

Pluto is, on average 39 AU (AU = sun to earth distance) from the sun.

The Oort cloud starts at ~20,000 AU and finishes at 200,000 AU.

Another is the Heliopause.

The heilopause is the volume of a bubble of space that is filled with the solar wind. At the heliopause the outward solar wind pressure is balanced with the pressure of the interstellar medium.

That is at about 120 AU.

If they used the heilopause: the circle is 4 times bigger than the orbit of Pluto.

If they used the Oort cloud, the circle is 500 times bigger than the orbit of Pluto.

To take this one step further.

The three things we need to completely describe an elementary particle. (proton, neutron, electron, anti-proton, etc)

Mass.

Charge.

Spin.

The three things we need to completely describe a black hole.

Mass.

Charge.

Spin.

To be fair, the orbit of electrons (neutrons are actually in the centre with the protons, not orbiting the nucleus) are nothing like planets. They're more like what happens when a cat gets stuck in a plastic bag and starts rocketing around the house at Mach 500. Their movement is so unpredictable that we can never actually say for sure where an electron is at any given moment, instead we can only map a cloud of probability, mapping out a general area where the electron is most likely to be. That's why when you look up the more complex electron orbitals outside of the basic 2d rings, they end up looking like a bunch of funky balloons. The balloons are those "most likely to be" areas.

It is pretty interesting!

Beautiful thought!