SadKangaroo wrote on Apr 25
th, 2018 at 8:32am:
Look at the formula for life on earth, we're made of the most common elements in the universe.
Just because we're yet to recreate the conditions that spawned life in a lab doesn't mean it can't happen again out there as it did here all those billions of years ago.
To think we're the only forms of life out there is far to self centered because we're just not that special.
But until we get evidence, no grainy out of focus photos or videos that are so easily faked, but actual evidence, we have to keep looking.
What so many on here like to do is rather than correct their ignorance of a situation, conclude, it must be aliens.
That's not proof, that's just the god of the gaps, aliens edition.
Agree with all of the above.
There is life out there and it will be different from us, starting point will be different but it will have the same purpose, survival of its genetics, whatever form it takes.
Being visited is a question of statistics and physics.
Statistics say there is no likelihood that Aliens that are technologically advanced are nearby.
Phyisics as we understand it, means the time to travel is huge and why make that effort and not say hello, there will be a purpose.
They must use the electromagnetic spectrum to communicate... we have not detected any such artifical signals. So they are not nearby.
So I conclude we have not been visited... well not yet.