[Alamo-Girl]

Thank you so much for your reply!

Got a question.. If space is null, empty.. then what is it.. it has to be something.. even nothing is something.. What is it?.. How can empty space be nothing at all.?. maybe its the same stuff thats between "atoms".?. That is if there even a thing called atoms..

Indeed empty space is not nothing. It is a vacuum which is theoretically possible to achieve. And space is not null, it is the geometry.

That jar on earth is full of air or ordinary matter which comprises 5% of the critical density of the universe. If you removed the air, it would be a vacuum which occupies the space defined by the coordinates of the jar itself.

If you were to fill that jar in the middle of the Milky Way galaxy, it would be full of dark matter (25% of the critical density). If you removed the dark matter, it would be a vacuum which occupies the space defined by the coordinates of the jar itself.

Likewise, if you were to fill that jar in the darkness of space, it would be full of dark energy, the remaining 70% of critical density. But it would not be a vacuum until you removed the dark energy.

[hosepipe]

[ If you were to fill that jar in the middle of the Milky Way galaxy, it would be full of dark matter (25% of the critical density). If you removed the dark matter, it would be a vacuum which occupies the space defined by the coordinates of the jar itself. Likewise, if you were to fill that jar in the darkness of space, it would be full of dark energy, the remaining 70% of critical density. But it would not be a vacuum until you removed the dark energy. ]

Dark matter?,,,, Dark energy?,,,,
(shining fingernails)
You're really OUT THERE girl.. I mean, waay out there..
And some think that I'M a bit loopy..
You're so far out there you make me seem normal.. I LIKE THAT...

Is dark matter and dark energy real or are they just mental constructs.?.. to answer unanswered questions.?.. or to complete some quantifying algorithm in physics.?.

[.30Carbine]

Your post brings to mind Billy Graham saying, "You can't see the wind, but you see the effects of the wind." Thank you!