3 ms·
> Should we presume that it must be an invisible ball of matter that gravitates but we have no other way of detecting except through the same effect we use to i
by shusaku 4y ago
> Should we presume that it must be an invisible ball of matter that gravitates but we have no other way of detecting except through the same effect we use to infer its existence, or should we tweak Newton's laws of physics?
I mean this is literally how they discovered Neptune? Dark matter isn’t necessarily some magically invisible particle, we’re just trying to count up all the different types of objects in the universe.
- russdill 4y agoI feel like the author is assuming here that the reader knows this is how Neptune was discovered and that the procession of mercury caused by relativity was long thought to be caused by a hidden planet. A very literal example of something thought to be missing matter that instead was a modified Newtonian theory.