Possibly the most important discovery, ever.

[fester30]

I can't see this event presenting insurmountable problems for theology but there'll be some interesting intellectual acrobatics from them. But it will be no less interesting a time for atheists as well.

Extropian

I don't think there will be need for intellectual acrobatics from theists.  If the bacteria on meteorites is the source of all life on Earth, some will claim God put the meteorites here to test faith, and others will make the same claim as evolution, that it's the method God chose for creation.  The higher power being omnipotent and omniscient is convenient for theists.