This is related to this question, but isn't the same thing.
This answer maintains that aliens (ie. extra-terrestrial beings) may exist but can't have free will because (according to the Lubavitcher Rebbe)
Free choice is only possible because G-d gave us the Torah. Without free choice, observing Torah and Mitzvot would be a sham. Therefore, when G-d gave us commandments, he gave with it the ability to truly choose whether to do them or not. It is because of the Torah that we have free choice. Since the Torah was only given to the Jewish people here on earth, we must say that any extra-terrestrial being does not have free will.
And yet, earlier in the answer, it states
'Curse you Meroz,' said the messenger of the Lord, 'curse you bitterly (you) inhabitants thereof,' because they came not to the aid of the Lord, to the aid of the Lord against the mighty.
The Talmud (Mo'ed Kattan 16A - English on page 59 here) brings two opinions of who or what Meroz is. According to one of the opinions, Meroz is the name of a star. So Devorah and Barak are cursing the inhabitants of a star (i.e. aliens) for not coming to their aid in battle.
If it is the case that the Merozians have no free will then why would Devora and Barak curse them for not getting involved? They had no choice whether to get involved or not? Surely the fact that Devora and Barak did curse them is evidence that they do/did have free will?