UFOs

[George Cantstandya]

(05-19-2021, 08:16 PM)BengalsRocker Wrote: Not to jump to another subject but how do scientists on this planet know what it takes for alien life forms to survive/exist?

I am totally baffled by the arrogance to be able to determine what an organism/species requires that they've never possessed nor have knowledge of before discovery.

That is kind of what I was saying earlier about our limited knowledge of other possible life forms.  Our understanding of biology is fairly new.  There was a study that has shown some bacteria are capable of living in pure hydrogen and pure helium environments, the most abundant elements in our known universe.   So while we have some idea what it takes to support life on our planet, our knowledge is limited at this point.