They are similar, in that one is the absence of the other. However, they are not opposites, so they could not be considered 'alike'.
The gravity on earth is 9.8m/s^2 I believe the gravity on the moon is 1.6m/s^2
Depends on the atmosphere. location, place, space and time of zero gravity
By far, the Earth's gravity is greater than a human's. The 'strength' of gravity depends on both of the objects being attracted by it.Between any two masses, there is a pair of equal, opposite...
The force of attraction by which terrestrial bodies tend to fall toward the center of the earth. The formula for gravity is g=9.8m/s^2