The universe is still vast and immense, it brings surprise and novelty for humans. The universe is large, the human is small, we cannot know whether there are any other places to have extraterrestrial life or not. In my opinion, I think they might come from Saturn, where people are not qualified to set foot in long-term studies. On planet Saturn, (nên dùng từ thế thì hay hơn In that place), we can tell the difference between male and female by looking at whether they have hair or not. If a Saturnian has hair, that's a girl and if not, that's a boy. a Saturnian may have 2 big eyes, 2 legs, 2 arms but he(she) only has 8 fingers. They don't have a nose or ears. Every day, Saturnian eat sunlight by their grey skin (chị nghĩ đến thực vật, nó cũng hấp thụ ánh sáng để sống nha :vvvv). and it's quite interesting that they don't take a bath but they always have clean bodies. Besides, they also enjoy playing sports like a human on Earth. Hope that one day when we can develop the technology to a certain extent, we can find the aliens.