Galaxien ohne dunkle Materie geben Astronomen Rätsel auf – Bizarre Objekte, denen jegliche dunkle Materie zu fehlen scheint, stellen ein kosmisches Rätsel dar
https://www.scientificamerican.com/article/galaxies-without-dark-matter-mystify-astronomers/
6 Kommentare
And an [archive link](https://archive.is/VCeQ8) 🙂
I love me some cosmic mysteries.
To me, this indicates that possibly dark matter has a significant cross-section.
It’s typically held that dark matter has no cross section and doesn’t even interact with other dark matter, except gravitationally.
But if it did have a significant cross-section, than a collision between to masses of dark matter could result in the displacement of one of the masses.
So – a galaxy and it’s dark matter could collide with another mass of dark matter and all it’s dark matter would be displaced by this other mass of dark matter.
What do these findings imply about the various candidates for dark matter?
I wonder how they determine a galaxy has no dark matter.
Backwards science. Perhaps dark matter does not mystify but the addition of more astronomers than ever before means that astronomers on average are mystified more easily.