Ive seen the images of these glaxies all just scattered around and there was always space between the Galaxies is that just Blackness aswell? Or space? Does that mean that in those spaces new Galaxies could form? Or in those spaces being so far away from anything gravity would cease to function?
2007-06-09 05:02:57 · 7 answers · asked by Anonymous in Science & Mathematics ➔ Astronomy & Space
The largest structures in the universe are called filaments, vast clusters of super clusters of galaxies. Between the filaments are voids. New galaxies are forming in these super clusters, or clusters not in the voids. In these voids there is little matter, so little to attract anything else with its gravity to form something remarkable.
Space is the vacuum, and mostly empty, that is why it is black.
Our universe is 28 billion light years across, based on our best data. About 525 solar systems, end to end, would fit inside of a light year.
To understand distances in space, think about this: One light year contains about 63,000 astronomical units, which is the average orbital distance of the Earth from the sun. There are about 63,000 inches in a mile. So imagine our solar system as a manhole cover in the middle of a road, Pluto would be orbiting well beyond the center, about 50 inches away.
Then imagine driving up the road 4.5 miles to another manhole cover, that's the nearby Alpha Centauri system. So you can see how big space really is. The Andromeda galaxy would be a 2.5 million mile drive away.
2007-06-09 05:35:23 · answer #1 · answered by Anonymous · 0⤊ 0⤋
I think it's just space. New galaxies do not form in empty space. According to the Big Bang, I think that the universe already has all the mass it will ever have. Once the stellar nurseries die out and no more stars are being made. it's specualted that the galaxies will continue to spread and will be drawn together into superclusters. Our own local group is headed toward the Virgo supercluster as we speak.We won't make it there until probably hundreds of millions of years from now. Then it's speculated that the supermassive blackholes at the center of every galaxy will fuse together as they merge with other galaxies and finally consume any matter left. I think thats as far as the Big Bang goes without going into what happens next. Hope it helps.
2007-06-09 06:35:16 · answer #2 · answered by Nunna Yorz 3 · 0⤊ 0⤋
Astrophysisits have been trying to solve this question.
The latest assumption about space relates to Einstein cosmological constant.Here it is reasoned that there must exist a subtance of space which has an energy density.
If the pressure between galaxity is greater than the Critical pressure then the galaxies will expand radially into the Universe.The questions about the Universe must be understood with some common sense:the Universe does not hang on nothing.
Concerning Gravity ,there are a few theories.The latest theory is The Autodynamics Theory of Prof. Ricardo Carezani.
2007-06-09 05:23:38 · answer #3 · answered by goring 6 · 0⤊ 0⤋
The truth is we don't really know. It could be empty space (I dont say vacuum because even "empty" space is filled with disturbances fading in and out of existence at extremely small scales. It more resembles a foam than a vacuum, according to recent thinking.) with the occasional stray star or planet that was flung out of a galaxy because of gravitational interaction.
Interestingly most of the mass in the universe is currently unacounted for so we call it "dark matter". Whatever this substance is, it just may exist in these voids between galactic superclusters. It could even be filled with supermassive black holes that have already devoured their galaxies for all we know.
Btw, galaxies can't just form. They need pre-existing mass to form. As far as I know there is no new galactic formation in the universe anymore. Plenty of new stars but no new galaxies.
2007-06-09 06:44:12 · answer #4 · answered by Matt 1 · 0⤊ 0⤋
Its just space, we don't fully understand exactly what all of that "stuff" is because we don't have the technology to fully get out of our own Galaxy yet.
2007-06-09 05:10:32 · answer #5 · answered by randomtask2122 1 · 0⤊ 0⤋
it is intergalactic medium, it is the most lonely place in the universe. if you were there there would be no stars, just black. for lack of a better word it is thought to have an "atmosphere" of about 1 atom of helium or hydrogen per cubic meter, very sparse, very empty
2007-06-10 15:43:33 · answer #6 · answered by Anonymous · 0⤊ 0⤋
It's a vacuum.
2007-06-09 05:11:07 · answer #7 · answered by Anonymous · 0⤊ 0⤋