why does mass curves the space?

Answer 1

It's actually gravity that bends the objects in space. A common example is why a sunset is orange. It's because the sun has already went past the horizon and what you are actually seeing is light bent from Earth's gravity. If gravity can bend light, it can bend other objects too.

Answer 2

Fundamentally, no one knows. The curving of space is the way Einstien's equations describe what we see, but this is just a mathematical description, like sine waves describe the behavior of electromagnetic radiation (including light). What is really going on at a fundamental level is still a mystery.

The sunset is red because blue light bends more than red light and when the sun is low on the horizon, and it's light is travelling through more atomosphere than when the sun is high in the sky, the blue light bends into the earth, leaving only the red. If the conditions are just right on a very flat horizon like the ocean you can see what is called a green flash. Even the red light bends into the earth as the tip of the sun goes below the horizon and only the green is left. Gravity does not cause this, gravity would bend all light at the same rate.

Answer 3

good question first off the sunset is orange or red not because the earths gravity bends the light (earths gravity isn't strong enough to bend light that much over such a short distance. its just because the blue side of the spectrum of light is filtered out at sunset due to having to pass through more atmosphere when viewed at a lower angle Blue light has a shorter wave lenght that red so the particles in the atmosphere deflect more blue light that red which has a much longer wave lenght.
now to your question. This concept of explaining the behaviour of light around gravity as everyone knows was introduced by Einstein. He theorized that for light to have the properties that it does space around a gravity well must be curved. Its not really curved in the sense that u or i understand its more a way to explain a 4 dimensional phenomenon

Answer 4

We don't know why; it just does.

The early poster's comment about gravity is meaningless. The correct concept is that the curved space (that is induced by mass) causes objects to travel on curved or accelerating paths. This effect is equivalent to what we call "gravity".

Answer 5

Because things that have extremely large masses have enough gravitational force to affect anything that comes near it, even light and space.