Here is the problem with speculative thinking about extraterrestrial life as well as about the origin of life.
I remember watching the Apollo moon landings on TV from 1969 to 1972 as a child.
Renowned scientist James Tour at Rice University is facing the wrath of Internet trolls because of his candid evaluation of origin of life research.
The Big Bang theory also gives us an age for the universe. The latest estimate, based on several cosmological observations, is 13.80 +/- 0.02 billion years.
Can we explain human technology merely by supernova explosions and blind chance? In rare earth elements, we find hints of a better explanation.