[bravesoul2]

I don't understand the more space thing then. Is this more space due to spacetime curvature or something else.

E.g. if we have earth and moon:

    O   o

Why is there more space from the moon towards earth than away?

[jblezo]

Spacetime curvature.

Like if you dropped the earth on a giant sheet, it would stretch the sheet more than what the moon would have.

[bravesoul2]

If you rely on spacetime curvature for your explaination then why not just use general relativity to explain the gravity?