Would theists become atheists if we found lifeform

[Simsim]

Would theists become atheists if we found lifeform on a other planet?
And i mean real lifeform, not micro organism.
Or better yet, what if we found intelligent lifeform that have civilazations?

Cause as far as i know there are not mentions of other life on other planets in the bible or quran (or is there?).
I wonder even if there is mention of any planets at all in bible or quran. As far as i know only earth, moon sun and stars.

Some of them would and some of them wouldn't.

Religion is not a completely strict culture. It , like the most of human cultures, tries to adapt to the the contemporary knowledge. For instance, Muslims and Christians still read the passages of slavery in Qur'an and in the Bible, but they don't leave their whole religions. They just leaved, practically and theoretically, the parts of slavery in religion. Of course they feel some contradictions between the "word of God" in scriptures and the modern life, but they don't give up.

A thousand years ago, your question might have been like that: "Would theists become atheists if there were no more slaves on the Earth?"