Question

If the earth is compressed to the size of a moon . What change will occur in the gravity ?

Answer 1

I think that the gravity will remain same..

Answer 2

We take the moon for granted, but Earth would be a very different place had our nearest neighbor only achieved half of its present mass when it formed some 4.5 billion years ago in a titanic collision. In fact, we might not even be here to appreciate it at all.