First of all viole, you have not shown me anything that says science overwhelmingly agrees that life started on earth only once... well, other than your posts.
Secondly, I don't know if you did read my post, but it has a link to information that specifically says...
LUCA is not thought to be the first life on Earth but only one of many early organisms, all the others becoming extinct.
Here is another :-
Life may have emerged not once, but many times on Earth
I could find a few more if you like.
Thirdly, I don't know of science being a hypothetical. It is a body of knowledge, but there are certain methodologies that must be applied before we can say "science says" anything.
So, no. Science does not overwhelmingly say what is hypothesized.
Fourth. Why are you speaking of what evolutionary biologists have distanced themselves from, since Uncle Charles Darwin died?
In that case, I am not sure you can exclude what Darwin himself did not. So where did life come from, if you know?
If you don't know, then why do you rule out special creation?
Do you accept that it is because it is presumed that there must have been a single common ancestor of all living organisms? Why? Because of a scientific consensus? Why?