Where does the Bible say that God did not create life on other planets than earth?

There are a bunch of people who have said they know life was not created on other planets because of the Bible or sometimes they will say they know living things with brains were not created on other planets because of the Bible

And they also claim other planets than earth exists

But they never say where it says that in the Bible but just say it is in the concepts in the Bible which they do not explain