4 ms·
IIRC, what's expanding is the distance between particles. Technically, the particles in your ears are moving farther apart, but the forces that keep your ears a
by Qz 16y ago
IIRC, what's expanding is the distance between particles. Technically, the particles in your ears are moving farther apart, but the forces that keep your ears attached to your head then conspire to keep them in approximately the same spot. The expansion still happens, it's just that the effects get propagated to places where mass density is low, aka between stars.
Then again, I could be totally wrong about that.
- Someone 16y agoI think you should not say that they are moving farther apart, but that they are getting farther apart. The weird thing with this expanding universe is that things can get farther apart from each other without moving. Similarly, distances between objects can grow faster than the sum of the speeds of those objects.
- Qz 16y agoYes you're right, 'moving' isn't accurate there, whoops!