The neighboring star is so close to the earth. Is there life on it?

The neighboring star is so close to the earth. Is there life on it? Bilin Star is a three star system. The novel is a three body system. Pandora of Avatar said that Bilin Star is the nearest galaxy to the solar system. It also takes three light years to get there. It is particularly difficult for humans to get there. After all, the aircraft currently built by humans has not known whether they can reach Bilin Star for hundreds of years. As a three star system, Earth like planets have also been found in Bilin Star. It is said that life may exist there, after all, in that location, Belonging to the livable zone, the universe is really big. Look up and see the brilliant stars. It's really beautiful. You can look up and see the Polaris, the Big Dipper, Lyra, Sirius. Those stars are so far away. So think about it. Is there any alien in the star system of the Big Dipper, and is there any earth like planet? Because it's too far away, it's really difficult for humans to go there. The universe is so big, and there are black holes, There are big bang theory and wormhole theory. It is really difficult to explore other galaxies. The speed of the main human aircraft is too slow. Unless anti gravity aircraft and near light speed aircraft are invented, it will be easier for humans to travel between stars.