Physics all over the universe?

Question

I read somewhere that, physics that applies on earth is same all over the universe ie physics laws are same all over the universe, but we have different gravitational force on different planets, so how can we say that physics is same all over the universe? Can anyone explain please?

Answer 1

Actually, it's not relativity, it's Universal Gravitation.

Some planets have different gravitational forces because they have different masses. The gravitational constant is constant throughout the Universe, but planets will interact with objects accordingly to this law

F=(GMm)/d²

Where F is the force of interaction

G is the gravitational constant

M is the mass of the planet

m is the mass of the object

and d is the distance between them.

So a larger planet would have a larger mass, and it will create a greater force. But the gravitational constant remains constant.

Answer 2

In other words, "Einstein's Theory of Relativity, what does it mean to our lives?"

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"Sometimes I have believed six impossible things before breakfast." ---The Red Queen

Wow. That's even better than the Nobel Prize for Physics.