Scientists have discovered another earth. Is it really parallel in time and space?

Of course not. When the media and scientists say another earth, they mean that the environment of a planet is very close to the earth and may be suitable for human immigrants to live in. But parallel spacetime, that is, multiverse, is likely to have other universes besides human universe, and these universes are a response to the possible state of the universe. To put it bluntly, there are other universes. Some people look like you and have similar life trajectories, but you will never meet. In this time and space, you are hit by a ball, but not in another time and space. So far, parallel spacetime is only a hypothetical theory, which has not been confirmed at all, and it has not been confirmed at all.