posted on Mar, 14 2013 @ 05:08 PM
Originally posted by Druid42
reply to post by Druscilla
There you go again, setting a new parameter that only strengthens the OP: Sophistication.
Sure, we'd like to believe that there is microscopic life thriving in thermal vents in alien oceans as much as they've been detected in our own,
bereft of sunlight, yet alive. In that order, microscopic life should be present everywhere, and I wonder if they'll find proof on Mars. Surely
meteorites have shown us this recently.
But let's remember extinction events, natural calamities that upset the balance of life. In far away star systems, do the same factors still apply,
albeit light years away? Surely.
There's a reason why there are no advanced life forms visiting us. The sophistication required to evolve from a thermal vent to interstellar travel
is a huge biological leap, and as previously stated, geological time is not on their side. Take millions of years, as evidenced on our own planet,
and lifeforms trying to develop have been besieged by a rather regular series of extinction events. The same would appear to hold true everywhere,
due to the lack of evidence of intelligent life, and also due to the rather random interactions of a multiverse full of death dealing asteroid
impacts. I won't go into gamma ray bursters from pulsars, but the plausibility factor of life evolving is rather slim when you consider the totality
of potential hazards.
There's not enough time for life to become sophisticated enough to become intelligent. The short span we've been "intelligent", like said, is but a
drop in the bucket.
To overlap two cultures, almost impossible.
Though Mars rover Curiousity showed that planet could have supported life, from analysis "showed the rock contained clay minerals that formed in a
watery enviroment. It also had traces of sulfur, nitrogen, hydrogen, oxygen, phosphorus and simple carbon --- essential ingredients for life."
"The car-size rover is not equipped to detect microbes, living or extinct. It can only use its on-board laboratories to examine Martian rocks to
determine the kind of enviroment they might have lived in." Quote: Associated Press
I'll have to disagree with your opinion: "there are no advanced life forms visiting us."
Contrary to your opinion...there is vast overwhelming evidence that advanced life forms are visiting our earth--- with subtle references of alien
interactions with Earthling's based on alien starship and creature sighting's.
My speculation on the ability of intelligent civilizations to have the wherewithall to construct and operate an interstellar starship...should not
necessarily be based on millions of years of evolution of said civilization --- but having the intelligence and ability to seek out the minerals
and alloy metals to construct such a starship --- would be of upmost importance --- along with the luck of being in the proper geographic location to
aquire such minerals; especially for the construction of a photon engine that is capable of superluminal speeds.
edit on 14-3-2013 by Erno86 because: spelling
edit on 14-3-2013 by Erno86 because: grammar
edit on 14-3-2013
by Erno86 because: spelling
edit on 14-3-2013 by Erno86 because: added a word