Where did the universe come from? Atheistic origin science has no answer.

[snowtracks]

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not me. God doesn't give private revelation.

Loads of Christians out there disagree.

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this impact also happened to provide much of the needed earth's core iron to form the magnetic field which shields the earth from the solar wind. "The iron core of the impactor melted on impact and merged with the iron core of Earth, according to computer models."
so the 'big whack' provided both the right atmosphere and magnetic field.
http://www.psi.edu/epo/moon/moon.html

Non sequitur, stop moving the goalposts: You claimed the earth had no atmosphere, cited an article, the next paragraph in the article describes an atmosphere.

On the other hand, I'm starting to understand where the username comes from.

wrote life-suffocating atmosphere---
"The Earth formed with the Sun 4.6 billion years ago. At this point, it was nothing more than a molten ball of rock surrounded by an atmosphere of hydrogen and helium" - no oxygen.