Even the physics are saying that an atom is made up of much more than was previously thourght
1) Physicists, not physics. Physics is the discipline, physicists are the practicioners.
2) There is no "r" in thought. There is no "r" in wash. Stop adding random "r's" into words. And "l's" that one really bugs me.
that there could be alternative realities running alongside our own
Alternate. Not alternative. There is a difference.
and No, these scientist were not christians.
1) "no" not "No". You're still in the same sentence, so you don't need to capitalize what comes after the word and.
2) "Scientists" not "scientist." If there are more than one of them, it's plural, not singular.
3) Christian, being a philosophy, and thus, a proper noun, gets a capital "C" whereever it occurs in a sentence.
They were not athiests either
While in most cases, the rule is "i before e," atheist is an exception. Good job on pluralizing it.
at last they admitted they could not negate or discount God/a creator.
There are very few scientists who will say, "There was definitely no creator." Science isn't about proving or disproving gods. It's about explaining the natural world around us (including the universe in this case).