It all starts with a curiosity; Objects that are not from the solar system.

There are objects that are not from the solar system and exist in the solar system, in fact, there are some candidates but of course you have to confirm it by going to them, there are some asteroid candidates captured by solar gravity, the most promising because it is relatively accessible, you could reach it, it is one that is in the orbit of Jupiter and that is quite rare because it orbits the opposite of all the other objects in the solar system and it is believed to be an object captured by the Sun a long time ago.

And there must also be many comets that have been captured from other stars that passed close to the sun and it is possible that there is also a dwarf planet that has been captured by the solar gravity and that is from another star system even older than the Sun itself.

It is practically known that Triton, which is a fairly large moon, is smaller than our moon, but has a fairly respectable size, it is the moon of Neptune, Triton is a dwarf planet and there are two theories, one, that it is a dwarf planet but from the Kuiper belt, which was captured by Neptune and the other theory is that it is a dwarf planet but that it was captured by the solar system and that it was then captured by Neptune, which is that it was formed outside the solar system. There are some astronomers. who defend that last theory.