Which planet in the universe will humans eventually choose to immigrate ...?

Titan was once considered the most suitable planet for migration.

In the process of exploring the solar system and extraterrestrial life in the universe, human beings have discovered many planets that may contain liquid water. Among them, besides Mars, there are the moon, Jupiter's moons Europa and Ganymede, and Saturn's moon Titan.

Titan, Saturn's largest satellite, is surrounded by a thick orange atmosphere, which covers the true face of Titan and casts a mysterious color on it. Previous studies have shown that Titan's composition is similar to that of the early Earth formation 4 billion years ago. In April 1998, the European Space Agency announced that they had found signs of water vapor in Titan's atmosphere, which further indicated that Europa probably had all the necessary conditions for early life formation. The Cassini nuclear-powered spacecraft launched by NASA will reach Saturn in 2004. Then, it will release a sub-detector named "Huygens" to the surface of Titan, collect data on the chemical structure and physical properties of Titan, and send it back to Earth by radio.