Invitation for Atheists to Debate a Christian via Skype

[Jehanne]

In The Physical Review Letters (I think, Section E), one can find models of eternal cosmologies, namely, that of the Cosmos that has no beginning or end.  That should settle the matter; anything beyond that is in the same category as appealing to the motion of stars and planets as being due to angelic beings pushing on them.

Again, this addresses the idea of a temporal First Cause. 

But Aristotle believed in an eternal universe, with no beginning or end, and also believed in a First Cause. Because his First Cause was first in an essential chain, not a temporal one. (And Aquinas agreed that a temporal beginning to the universe couldn't be proven by logic.) 

So the authority you cite here doesn't address the standard First Cause argument.

Aristotle also believed that heavier objects fall faster than do lighter ones.