<p>I find the OP extremely amusing. Just listen to yourself.</p>
<p>If you are trying to argue this logically, Moodrets, consider the following argument:</p>
<p>Premise 1: The universe is infinite in size.
Premise 2: Life on a planet is caused by a number of variables aligning favorably.
Premise 3: Life exists on at least one planet.
Conclusion: There are an infinite amount of chances for life to exist... therefore, infinite amounts of life exist.</p>
<p>Of course, it could be argued that the universe is not truly infinite in scope. But this just goes to show that the chance for life is not infinite. It does not show that there is no other life. With so many galaxies/solar systems, you have to acknowledge the very real possibility of extra-terrestrial lifeforms.</p>
<p>*If you are trying to argue this logically, Moodrets, consider the following argument:</p>
<p>Premise 1: The universe is infinite in size.
Premise 2: Life on a planet is caused by a number of variables aligning favorably.
Premise 3: Life exists on at least one planet.
Conclusion: There are an infinite amount of chances for life to exist... therefore, infinite amounts of life exist.*</p>
<p>Of course, size (empty space) does not necessarily have to mean infinite matter (and is itself rather unsupported, unobservable, and unfalsifiable -- how exactly would someone be able to experience/validate infinity, anyway?), and assuming that it does one would have to throw the first two laws of thermodynamics out the window (as they now become nonsensical in light of infinities).
*
Of course, it could be argued that the universe is not truly infinite in scope. But this just goes to show that the chance for life is not infinite.*</p>
<p>I think you mean infinitesimal, right? If the chance for life were infinite (impossible, anyway. The highest probability value is 100 -- you can't have a 125% chance of winning), or rather 100%, life would occur indiscriminately.</p>
<p>* It does not show that there is no other life.* </p>
<p>I've never claimed that there is no other life. I've simply been against the OPs baseless speculation and the baseless assumptions of others.
*
With so many galaxies/solar systems, you have to acknowledge the very real possibility of extra-terrestrial lifeforms.*</p>
<p>I've never denied the possibility, but I find it utterly useless to talk about possibilities. I prefer to deal with probability.</p>
<p>
[quote]
HAHAHAHA, yesterday, some friends and I were on the beach. Some strange lady approaches us with credentials from one of those tabloid newspapers. She tells us that there has been a recent UFO sighting in the area, and interviewed us as to whether or not aliens existed.</p>
<p>My friend responded, saying that she saw ET and that completely ruined it for her.
I gave my response using my best friends name. I just found out that the interview is being printed with a picture next week...
[/quote]
Hahaha awkward...</p>
<p>Anyway, how do we know that WE aren't the aliens?</p>
<p>@differential</p>
<p>lol cmon this is a quite interesting topic.........</p>
<p>It is possible that life exists on some other planet. However, stories about Area 51 and UFO sightings are just ridiculous. As others have pointed out, the universe is a big place. So, life evolves on another planet, the aliens develop the technology for intergalactic travel, and then randomly stumble across our planet? And then don't make themselves known except for a few fly-overs, abductions, and a crash landing? Get real.</p>
<p>Of course they're real. Just take a look around you. You don't actually believe that Bush, Cheney and most of the members of Congress are really from this planet, do you?</p>
<p>
[quote]
IMO, complex life is unique to a very very very small percentage of planets (possibly even only our own), while simple life is prevalent throughout the universe.</p>
<p>Earth is an anomaly. There are so many requirements (ideal location, core, formation, etc.) that the presence of another earth-like planet harboring complex, sentient life is close to none.
[/quote]
</p>
<p>You have to realize that "simple" prokaryotic bacteria are way too complex to be called "simple life".</p>
<p>Actually, there is this group that considers itself a major religion that believes in aliens. Look up the story of Xenu. Apparently we evolved from space clams.</p>
<p>"Of course, size (empty space) does not necessarily have to mean infinite matter (and is itself rather unsupported, unobservable, and unfalsifiable -- how exactly would someone be able to experience/validate infinity, anyway?), and assuming that it does one would have to throw the first two laws of thermodynamics out the window (as they now become nonsensical in light of infinities)."</p>
<p>I believe it's generally known that matter is relatively evenly distributed throughout the universe, which is roughly 13 billion light years wide, compared to, say, our galaxy, which is 100,000 light years wide and 1000 light years thick. </p>
<p>I'm just curious how you can mathematically deny that the extrapolation of ≥1 living planet per 7.853 quadrillion square light years cannot carry over to other ordinary galaxies.</p>
<p>
[quote]
You have to realize that "simple" prokaryotic bacteria are way too complex to be called "simple life".
[/quote]
</p>
<p>Pshh, who said I said prokaryotes. I meant archaea; extremophiles and the such, some which can evolve in seemingly sterile environments. </p>
<p>
[quote]
I'm just curious how you can mathematically deny that the extrapolation of ≥1 living planet per 7.853 quadrillion square light years cannot carry over to other ordinary galaxies.
[/quote]
</p>
<p>Consider this. 100 cubic feet separated into 10 cubic foot sections. One cube in one section houses a marble. </p>
<p>Just because one section houses a marble, doesn't necessarily mean that the other sections hold a marble. This applies to our earth-in-galaxy scenario. Just because our vast galaxy holds an Earth, doesn't mean that all other galaxies could.</p>
<p>If we followed your logic, then we could assume that all single star solar systems have an Earth; or that because there's life on Earth, there must be life on every other planet.</p>
<p>Is it true that if the Earth was 1 inch closer or farther away from the Sun, that life would be nonexistent?</p>
<p>^ What? Earth's distance to the sun changes with it's rotation. That's why summer days are longer (farther from the sun) and winter days are shorter (closer to the sun).</p>
<p>There's a habitable zone though; the area around the sun where water can exist in all three forms.</p>
<p>^ Actually, this is incorrect. Earth's distance to the Sun really doesn't change that much with its rotation. The Earth's orbit around the Sun is, in fact, very close to being a perfect circle. We experience the seasons because the Earth rotates on an axis that's tilted in it's orbit around the Sun. That 23.5 degree tilt causes the northern and southern hemispheres to be at different angles to the Sun at different times of the year. Because of the Earth's angular tilt, during winter the energy from the Sun must travel through more of Earth's atmosphere to reach the poles. Also, a given amount of the Sun's energy is spread over a larger area. Thus: cold. The opposite effect occurs during the summer. Trust me on this one. I've been an amateur astronomer for four decades.</p>
<p>For reals, they're real. :)</p>
<p>Haven't seen an alien or seen a UFO. But if I haven't seen it, it maybe true that there is another form of living things out side this planet. What if the spaceships that NASA sends off to other planets and satellites too, that these so called aliens or kind of living life forms call that a UFO or can call us Aliens. Come on if us humans have explored other planets with the use of satellites and robots, yes there are other form of living creatures outside this planet.</p>
<p>i hope there is a unicorn planet</p>