Quote:
Originally Posted by xelasnave
Thinking more about the logic.
Having made such an observation why did not Hubble reach for Dark Matter to explain it..seems reasonable...in other words could he not have credited the expansion to a dark matter shell at the edge of the universe that was attracting the galaxies in an outward direction??? I simple see the conclusion of expansion although arguably a logical conclusion because of its exclusion of alternatives as not logical.
alex  |
Hubble would have committed professional suicide if he made such a statement.
It's been known since the 18th century if you distribute matter into a spherical shell then there is no force of attraction between an object inside the shell, and the shell itself. The force of attraction can only exist for objects outside the shell.
Regards
Steven