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Milky Way v Andromeda
Hi all,
I seem to recall reading somewhere recently of some new thinking about the relationship between the Milky Way and Andromeda. I now cannot remember where, and if this is the new accepted thinking.
Andromeda is larger in apparent size to the MW. But, new observations and maths has show a different set of gravitational influences on each other, and so new trajectories. These different parameters can only be achieved if the mass of each galaxy is closer to being the same rather than the mass of Andromeda being greater than the MW's. This in turn implies that MW must have more dark matter than Andromeda in order to fulfil the apparent mass deficiency from what was originally postulated of the MW.
Is this the current situation?
Regards,
Alex.
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