Which planet in the universe is habitable?

Apart from the earth, no other livable planets have been found, and there are many celestial bodies that can land briefly. All the solid objects in the solar system, which have a certain volume and are not very close to the sun, belong to this category, that is to say, except Mercury (too hot), Saturn and Jupiter (liquid), all the larger objects such as Mars, Venus, Uranus, Neptune, Pluto, asteroids, satellites and some comets.