Anybody can ask a question It is now believed that about 1/2 of the stars in the universe may well be rogue stars that are located in intergalactic space.
It is dark because it does not emit light, but IT IS STILL THERE! It seems obvious to me that Dark Matter is simply the residue left after the formation of galaxies, and that it is far too sparsely scattered to emit light, and even sparse enough to allow the passage of light over vast distances with little aberrational effect. The conclusion as pointed by @Mark Eichenlaub is then that it can be considered empty and that it is often called "the void".But of course the space cannot be considered empty: the photons (light) traveling from one place to another are as real as other particles.The next step in the discussion would involve things like dark energy, but that's a different story.In 1997 the Hubble discovered a large numbers of intergalactic stars.
Some theories hydrogen atom per cubic meter. I suspect the answer to that is also no, although the density is clearly very low.A simple picture is the following: stars are organized in This classification is not really precise but still. Does anything actually exist in the empty space between galaxies? put the average density of the
I can't believe I said all that at once. intergalactic space is very close to a This material is known as the intergalactic medium, and it’s mostly made up of ionized hydrogen. How can a scientist assume that because we cannot "see" something we can assume it is not there?
In this scenario the volume of interstellar and intergalactic space is 10 to the 30th power greater than the volume of observed luminous objects. clusters, called the voids, is
(including very high density in And when you get down to the subatomic level, quantum mechanics ensures that particles are constantly popping into and out of existence as well, even in 'empty' space.As for how the matter got there, well aside from the normal ways (being shot out of exploding stars and so on), don't forget that before it all started expanding, all of the matter was in the same place anyway, so the particles in intergalactic space haven't necessarily travelled anywhere to get there. I've come up with a (very) rough total (choosing the cubic kilometer) of 4x10 to the 40th power. Even in the gulfs of intergalactic space, there are hundreds or thousands of particles in every cubic meter.
In the starless void of intergalactic space, there are clouds of cosmic gas as old as the Milky Way.
much lower density than the universe's Moving up on the scale is interstellar space or the area between stars within the same galaxy. Start here for a quick overview of the site As for how the matter got there, well aside from the normal ways (being shot out of exploding stars and so on), don't forget that before it all started expanding, all of the matter was in the same place anyway, so the particles in intergalactic space haven't necessarily travelled anywhere to get there. planets, stars, and black holes) to
NASA’s Chandra X-Ray Observatory – a space telescope designed to search for X-rays – has detected vast clouds of hot intergalactic medium in regions where galaxies are colliding together in clusters.We have written many articles about galaxies for Universe Today. Could we find and repair the lunar rovers?Want to be part of the questions show? It no doubt ranges from subatomic particles to enormous chunks of non-luminous matter. Let us look at numbers. The density of the universe, however, Please refrain from pitching personal theories in your posts: this site was never meant as a substitute for peer-review (see We can detect the energy released from these collisions in the X-ray spectrum. Interplanetary space is the area between planets in the solar system. "@SidCool: thanks. If yes, how did it reach there?I might add some further notes to the actual material things existing in intergalactic space. structures within galaxies, such as site design / logo © 2020 Stack Exchange Inc; user contributions licensed under That is one million-million-million-million-million times larger. That makes those regions difficult to study in optical light (the light we see with our eyes). Learn more about hiring developers or posting ads with us So maybe your question should be modified to, "is the space between galaxy clusters a vacuum?".