[MrB]

The problem is that “science” can’t time travel.
You can experiment in the here and now,
and only conjecture about the past.

[refermech]

Two competing theories and neither satisfy me.. The truth is that nobody knows.

[GunRunner]

The problem is that “science” can’t time travel.

Sure it can. Tonight, if it is not too cold, look up into the sky. You're looking at hundred, thousands, possibly millions of years into the past. With a telescope you can see billions of years into the past.