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Originally posted by Vandalour
reply to post by nv4711
But it could also be the case that they come from a planet with the same type of atmosphere and gravity, and have been scanning the universe for a similar planet, and found us.
Originally posted by spirit_horse
Or they actually came from this rock. If you were an intelligent species with advanced capabilities such as space travel and deep sea capabilities, where would the safest place be right here on good ol mother Earth?
Well, I would choose the deepest parts of the oceans. A very stable environment is most areas. It is the largest component of the surface and living area of the planet. And, if you didn't want to be bothered by other beings, even enemies from flying by and seeing you the bottom would be a great place. You could even build large complex bases in the sides of the largest mountainous regions on the planet.
Further, you wouldn't have to deal with radiation from our nearby star, or the tornados, volcanos, and hurricanes that continually destroy the surface dwellers homes. You would quite literally be living in the most stable part of our planet.
Ever wonder why the greys may have huge eyes and only show up at night. They may be used to a darker environment. Check, bottom of the ocean is dark. And the USO's coming and going from the oceans would make sense then. The Earth has been around quite a long time. Kind of arrogant to think we are the most advanced species. After all, our wars are constantly fought on the surface. Killing each other of our own species. And people wonder why they don't just land and pop out for a chat. Humans are a very dangerous animal.
I think it is time to expand your mind a bit and consider all of the data available and not just pop out and try and claim you have all the answers. Just sayin...
edit on 29/11/11 by spirit_horse because: (no reason given)
Originally posted by nv4711
Originally posted by Vandalour
reply to post by nv4711
But it could also be the case that they come from a planet with the same type of atmosphere and gravity, and have been scanning the universe for a similar planet, and found us.
True - If the Universe is infinitely large (which it might be), then mathematically there will be planets, even solar systems very similar to ours. But the same math says that these solar systems / planets would be ultra far away, probably even beyond the horizon of the observable Universe, something in the region of 5 to 10 billion light years or more. So when they "scan" the Universe, Earth or our Sun wouldn't even be visible to them yet, because the light from our solar system hasn't reached them yet - therefore they couldn't detect us.
Could Extraterrestrial Intelligences be Expected to Breathe Our Air?
Abstract - An objection sometimes raised to the Extraterrestrial Hypothesis (ETH) in UFOlogy, especially as it is applied to Close Encounters of the Third and Fourth Kinds (cases wherein UFO occupants appear), is that beings from other worlds could not find our own atmosphere compatible. Therefore all such reports are a' priori false. This paper goes beyond that simple "common sense" position to analyze whether it is scientifically defensible. It concludes that this anti-ETH position is not only indefensible but that reasonably strong arguments can be made that atmospheric compatibility might be the rule rather than the exception. Information is drawn from astronomy, planetology, biology and the history of technology.
Originally posted by Vandalour
But it could also be the case that they come from a planet with the same type of atmosphere and gravity, and have been scanning the universe for a similar planet, and found us.
Originally posted by jaxnmarko
reply to post by nv4711
Maybe they are less "Fragile" than us humans are. If our oxygen level in our atmosphere were maybe 20 percent higher or lower, we would likely all die. If the average temperature levels were a mere 100 degrees higher or lower, we would all be dead, if the air pressure were much higher or lower... the same. UNLESS we Developed on a planet with more radical changes! But we developed here so are "acclimated" to the levels.
We also only live in a very narrow range of elevation relative to sea level. Our live giving envelope is tiny. Considering the temperature differences alone, between Venus and Mars, which are only a tiny fraction of the potential temperature range of other planets, you can see we only live in a Very Narrow range of outside of the body influences. Differences in gravity, temperature, air pressure, atmospheric gases.... we are Very Fragile. And remember this.... OXYGEN is a Corrosive gas that also allows for Fires. They may think WE are very strange for having developed here!
What happens to a human whose temperature rises above 110 degrees internally, or drops below 80? What happens to a human at 30-40 thousand feet without supplemental oxygen? A Vulcan like Spock is more tolerant of ranges. We are finding extremophiles of primitive nature on our own planet we had no idea existed. Able to live without oxygen or light, at great pressures. Yes, primitive but isn't that how we started out according to evolution? Given time.... who knows what kind of beings could develop on other planets and what their capabilities could be for living in far wider ranges than Mere Humans?
Originally posted by Kandinsky
reply to post by SplitInfinity
Read the article and see what it says about that.
Swords is one of the brightest minds in the field in my opinion....and maybe the least well-known.
Originally posted by Kandinsky
reply to post by nv4711
Hello NV, you might find an article by Michael Swords interesting; I certainly did. He puts forward a reasonable argument that 'ETs' could *possibly* survive in our environment.
Could Extraterrestrial Intelligences be Expected to Breathe Our Air?
Abstract - An objection sometimes raised to the Extraterrestrial Hypothesis (ETH) in UFOlogy, especially as it is applied to Close Encounters of the Third and Fourth Kinds (cases wherein UFO occupants appear), is that beings from other worlds could not find our own atmosphere compatible. Therefore all such reports are a' priori false. This paper goes beyond that simple "common sense" position to analyze whether it is scientifically defensible. It concludes that this anti-ETH position is not only indefensible but that reasonably strong arguments can be made that atmospheric compatibility might be the rule rather than the exception. Information is drawn from astronomy, planetology, biology and the history of technology.