They are similar, in that one is the absence of the other. However, they are not opposites, so they could not be considered 'alike'.
They are both alike because they both have no gravity
they melt rocks
I know for fact that having no gravity means that we would all just be suspended in mid air. Having gravity is just like now on earth when we all touch the ground like normal people. These are alike because they both have to do with gravity and they both determine what positions us on earth.
because with gravity has a couple types but one of them are water that turns to ice and so does glaciers.
because of gravity
Water is transported by gravity from one location to another.
earth and mars are like and different because they have a atmosphere and gravity
Weight is the measure of gravity that is holding you down. Mass is how much is being held down. Mass of a person will not change if suddenly they're transported to the moon. The weight, however, will because the pull of gravity is less. So they are related, but not alike.
They are not. Both have gravity which influences other objects in space. That's pretty much it.
They tend to be round, spherical objects which are visible in space. They have great mass and their own gravity.
They are two of the fundamental forces of the universe, along with the strong and weak nuclear forces.
They're exactly alike in every way, except that they have opposite charges. Gravity even acts the same way with them, despite what some people would lead you to believe.