Why does Space-Time curve and more importantly, why and how does Space and Time come together to form a “fabric”?
In: Physics
Everything you can touch is called matter. That matter stuff has mass, which creates gravity. The more mass the more gravity. Big massive things can pull on other things with gravity, and hold them in orbit like the moon orbits the earth. The moon follows a curved path in space. If the Earth were replaced instantaneously with the Sun, the moon would curve even more and crash into the Sun. So gravity curves space.
Time is only realized and measured when things move, like a pendulum clock or atomic orbitals.
If you and a friend set your watches to the exact same time, and you travelled really fast away from them and came back, your watches would have different readings. Time is something you take with you when you move in space. So when you move in space and in time, you are moving in spacetime.
How the fabric is woven is determined by relativity and the speed limit the universe has set upon matter.
Why ? You would have to ask Steven Hawking.
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