What does intergalactic space hide?

There are many beautiful and dynamic palaces in the Univerce , but most of its regions are very dark voids between galaxies. If you were in a place like this you wouldn't see anything. You couldn't say, you are surrounded by anything. Or could you?

In fact, we know, there are many types of things travelling throuh intergalactic space. For example, rogue/ejected stars. Those are stars that don't have gravitational relation with any galaxy. The vast majority of them were created in a galaxies, but were ejected from them for example because of collision with other galaxies or because they gained tremendous velocities after interaction with a supermassive back hole in center of the galaxy. 

Other intergalactic objects can be planets. They are used to be called rogue planets. From their definition we can say, they can drift through the space between stars in the galaxy or, just like rogue stars, through intergalactic blackness. 

There are many other types of things outside galaxies, like dark a energy, dark matter, or an exotic matter with negative mass, but those are things on a diffrent topic (more info in the source video). There are also voids so big that can contain galaxies themselves, drifting alone, billions or trillions light years from the nearest galactic cluster.


a rogue star:


a rogue planet:


a lonely galaxy tens of billions of light years away from others:


https://www.youtube.com/watch?v=mgZqBiJtRZ4&ab_channel=JohnMichaelGodier    

https://en.wikipedia.org/wiki/Rogue_star

https://en.wikipedia.org/wiki/Rogue_planet                       


Komentarze

  1. englishdiary15 września 2020 11:43

    Remember, use Wikipedia only to guide your research an base your posts on other sources.
    How do we know that a star is a rogue one? I gather this can be somehow mathematically demonstrated?

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