There are sections of space called “voids” where there’s almost nothing. Like even LESS nothing than usual.
The largest one we know of is called the Böotes (super)Void. In 200,000,000 light-years, there are around 60 galaxies.
You could duplicate our galaxy around 2,300 times and still not reach from edge to edge.
If we were in the center of the void, we wouldn’t have discovered other galaxies even exist until telescopes got sophisticated, large, and sensitive enough to see the faint and distant galaxies that were closest. Sometime in the late 1960s/early 70s, most likely.
a black hole’s radius grows linear with its mass. but its volume grows with the third power of its radius. so, the more massive a black hole gets, the less dense it gets.
If you feel like it, tell me the first random astronomy thing that comes to your mind 👀
Space is big like really big. It would take well over an hour to walk from here to the moon and the moon is really close
Big if true
More than two hours, I’d say
Space is REALLY BIG and SUPER EMPTY
There are sections of space called “voids” where there’s almost nothing. Like even LESS nothing than usual.
The largest one we know of is called the Böotes (super)Void. In 200,000,000 light-years, there are around 60 galaxies.
You could duplicate our galaxy around 2,300 times and still not reach from edge to edge.
If we were in the center of the void, we wouldn’t have discovered other galaxies even exist until telescopes got sophisticated, large, and sensitive enough to see the faint and distant galaxies that were closest. Sometime in the late 1960s/early 70s, most likely.
a black hole’s radius grows linear with its mass. but its volume grows with the third power of its radius. so, the more massive a black hole gets, the less dense it gets.
The actual black hole doesn’t get any less dense though. The event horizon just starts encompassing a larger amount of space.