Under the Same Starry Sky

When you look in the mirror, what would happen if the you in the mirror really existed and appeared in front of you? Scientists have considered this question, and they call the you in the mirror the "anti-you." Scientists imagine that there is a world very far away that is very similar to ours. It will be an anti-world composed of anti-stars, anti-houses, anti-food and all other anti-matter. There, everything that exists naturally in our world also exists. In the starry sky at night, have you looked up at the sky and thought about what the other you is doing under the same starry sky? So is there a world far away that is opposite to ours? The universe is so vast, and there are infinite possibilities under that infinite space.