CommanderFrank
Cat Can't Scratch It
- Joined
- May 9, 2000
- Messages
- 75,399
Paging Steven Hawking: please explain what the heck is going on in yon galaxy cluster. It seems that the dark matter is not acting as it should and have the corps of scientists who have been studying the phenomenon since 2007 scratching their massive cerebral cortexes in unison.
In the case of Abell 520, the situation is completely different: The galaxies sailed through the collision, but the dark matter piled up in the middle, along with the hot gas.