funnybunny said:

How do you terraform gravity?

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Hmm well a good place to start is what is gravity?

I have been asking this question for along time, and not many people have come up with satisfactory answers. Heres an idea thought, on the forefront of theoretical physics:

Gravity is a curve in space time, and because of this curve, larger objects attract things to it. Imagine a bowling ball on a rubber mat suspended in air. The ball causes the mat (which represents space time) to curve. Now place a smaller object on the same mat, such as a pin, the pin rolls towards the bowling ball, no?

This is one theory of what gravity is (very very very simplified).

Now, just because mars doesn't have an atmosphere doesn't mean it doesn't have gravity, however, mars is smaller than the earth, so there will be a smaller downwards force acting upon objects on it.

Mars' gravity is about 3.8ms^-2 which is about a 1/3rd of the earths.

As for creating gravity.. well there are several hypothesized ways:
You could spin the object in question to such a degree it creates a centrifugal motion, creating gravity (I don't think that would work on a planetary scale)

Accelerating the object.. similar to the above "forcing the objects inside the vessel to go in the opposite direction of acceleration"

Or Creating a superdense core, to 'weigh' (I use the term loosely) the object down.

http://en.wikipedia.org/wiki/Artificial_gravity

I don't think this is going to happen any time soon though

aNeway2sayHooray said:

Does time change when things get closer to denser objects/objects with more gravity?Does the passage of time speed up the closer you get to something like a blackhole or a white dwarf?I guess its all in the concept of what time is and if it is linear,circular,non existant or what.

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Is light affected by gravity or as you put it,this bend/curve in space and time?I assume so.I have not taken any college physics classes though.

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This has also been experimentally proven, and was in fact the proof that sealed the deal on Einstein's theory of relativity.

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