Australian Politics Forum - Are we alone in the Universe?

Sophia

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Re: Are we alone in the Universe?
Reply #75 - Feb 9^th, 2016 at 4:59pm

Bobby. wrote on Feb 8^th, 2016 at 10:49pm:

As an example -

the Earth is 4.5 billion years old.
We only developed intelligent life after 4.5 billions years that could transmit a radio message
& in only 50 years after that we could have easily been totally wiped out by nukes.
You're looking at a 50 year window in 4.5 billion years.

The Universe is 13.7 billion years old - &
let's say it takes 4.5 billion years to develop intelligent life.
Life could have developed on a planet 13.7 - 4.5 = 9.2 billion years ago
& wiped itself out in only 50 years.

In that case they have been dead for 9.2 billion years.

That's the problem - it's the enormous amounts of time.

What's the chance that we would have met such a civilisation?

zero.

What I find fascinating, is when they discovered all those ancient paintings on rock walls from ancient civilizations, that seem to depict space men, wearing helmets or elephant like breathing aparatas.

They drew it as they saw it.

Probably nothing new to them.

Get the feeling we have been abandoned long ago by any space ancestors if there were any.

Maybe at the time, the few humans that were on the earth, were being watched, to make sure they survived, whereas now, we have procreated to such an extent, why would 'anyone or being out there' be watching us now? And for what reason?

Didn't the meteorites bring life, lots of different bugs etc, onto the planet?

Could that have been some distant planet with life, that exploded, and pieces of that planet (meteorites) drifted for goodness knows how many years, until it reached our earth to collide and therefore make life on here?

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« Last Edit: Feb 9^th, 2016 at 5:13pm by Sophia »

If you put the federal government in charge of the Sahara Desert, in 5 years there'd be a shortage of sand.

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Sophia

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Re: Are we alone in the Universe?
Reply #76 - Feb 9^th, 2016 at 5:12pm

Emma wrote on Feb 9^th, 2016 at 12:09am:

Bobby. wrote on Feb 8^th, 2016 at 10:33pm:

Emma wrote on Feb 8^th, 2016 at 10:17pm:

Could be, might be, perhaps.. fact is we don't know. All your responses are based on our own historical and empirical knowledge, but it only applies in this tiny part of space.

No matter how one chooses to extrapolate from our knowledge, we just do not know. BUT we do know, as I tried to point out earlier, that WE exist. As do the billions of life forms currently extant on mother Earth.

To even consider we are unique here on Earth just sounds like the biggest example of 'head in the sand' I can think of.

If Stephen Hawkings is warning us against seeking alien contact, where does it leave you.?
I know he is a lot smarter than me.!! Roll Eyes

But it's more likely that aliens exited & long since died out.
In that case we could still be alone.
The problem is that the time factor is so long that only a small window of opportunity
in time could allow 2 intelligent beings to meet.
We've only had radio communications for 100 years or so -
we could have been wiped out by nukes only 50 or so years after discovering radio.

The better question is -
did intelligent life evolve somewhere else even if it's long gone now?

I really find your position that any other intelligences are much more likely than not to be long dead a bit mystifying.

As you point out, time has a role in what we know... we are short - lived. IE we don't know much.

Why this means to you that we are the most recent incarnation of life totally escapes me. It is not logical.
Sounds more like whimsy to me..

Seems to be the case with many species, that are no longer in existence, such as certain animals, birds, etc for instance.

And then our former neanderthals, were alive and well, survivors of the wild, with skills needed for their survival.....were in existence 100 thousand years ago....then 48 thousand years ago, they just simply stopped being. As it turned out, a huge volcanic blast that effected a lot of europe with it's poisoness ash, blocking out the sun, and suffocating anything living, and it took 100 years for the soil to recover to be fertile again.

That's what happens, we can have that, and also, something worse than that to wipe us out with illness, with all the creations man has made, such as nuclear plants etc. to effect anything living for thousands of years instead.

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If you put the federal government in charge of the Sahara Desert, in 5 years there'd be a shortage of sand.

Milton Friedman

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Emma

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Re: Are we alone in the Universe?
Reply #77 - Feb 9^th, 2016 at 9:50pm

Richdude wrote on Feb 9^th, 2016 at 4:59am:

Think of the odds.
If one in a thousand suns in the Milky Way had a planet with the right conditions for life to evolve - that means that there could be several million planets with life.
The Milky Way is one in a billion galaxies.
So what are the odds? One in a trillion or a trillion to one?

Indeed.

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Bobby.

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Re: Are we alone in the Universe?
Reply #78 - Feb 9^th, 2016 at 9:55pm

Sophia wrote on Feb 9^th, 2016 at 5:12pm:

Seems to be the case with many species, that are no longer in existence, such as certain animals, birds, etc for instance.

And then our former neanderthals, were alive and well, survivors of the wild, with skills needed for their survival.....were in existence 100 thousand years ago....then 48 thousand years ago, they just simply stopped being. As it turned out, a huge volcanic blast that effected a lot of europe with it's poisoness ash, blocking out the sun, and suffocating anything living, and it took 100 years for the soil to recover to be fertile again.

That's what happens, we can have that, and also, something worse than that to wipe us out with illness, with all the creations man has made, such as nuclear plants etc. to effect anything living for thousands of years instead.

Neanderthals still exist:

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Emma Gold Member Offline Australian Politics Posts: 9853 OZ Gender:	Re: Are we alone in the Universe? Reply #79 - Feb 9^th, 2016 at 10:05pm Well it does appear that all of us homo sapiens have Neanderthal genes, so yes, they do still exist to some extent. To suggest they were ignorant fools is offensive.
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Emma Gold Member Offline Australian Politics Posts: 9853 OZ Gender:	Re: Are we alone in the Universe? Reply #80 - Feb 9^th, 2016 at 10:12pm The video was hilarious though.!
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ian

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Re: Are we alone in the Universe?
Reply #81 - Feb 9^th, 2016 at 10:56pm

Sir Grappler Truth Teller OAM wrote on Feb 8^th, 2016 at 10:54pm:

I believe we are not - but have no proof..

I have a Rhesus negative blood group - A neg and about 6% of population - even though both my parents were positive, one an A and the other a B....and it is impossible for them to have created an RH- child...... some suggest that means I'm a direct descendant of aliens.... crazy that, though.....

I guess I'm a ring-in..... had me a Trooper once who was A neg - I said stick close in case I need you...

Common misunderstanding, you get your genetics from your grandparents, not your parents,.

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Emma Gold Member Offline Australian Politics Posts: 9853 OZ Gender:	Re: Are we alone in the Universe? Reply #82 - Feb 9^th, 2016 at 11:41pm pity I never knew any of my grandparents.. I'd be really interested.
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Bobby. Gold Member Offline Australian Politics Posts: 118227 Melbourne Gender:	Re: Are we alone in the Universe? Reply #83 - Feb 10^th, 2016 at 5:59am Emma wrote on Feb 9^th, 2016 at 10:12pm: The video was hilarious though.! Very funny but also sad that such fools actually exist.
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Bobby.

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Re: Are we alone in the Universe?
Reply #84 - Feb 10^th, 2016 at 6:52am

Sophia wrote on Feb 9^th, 2016 at 4:59pm:

Bobby. wrote on Feb 8^th, 2016 at 10:49pm:

As an example -

the Earth is 4.5 billion years old.
We only developed intelligent life after 4.5 billions years that could transmit a radio message
& in only 50 years after that we could have easily been totally wiped out by nukes.
You're looking at a 50 year window in 4.5 billion years.

The Universe is 13.7 billion years old - &
let's say it takes 4.5 billion years to develop intelligent life.
Life could have developed on a planet 13.7 - 4.5 = 9.2 billion years ago
& wiped itself out in only 50 years.

In that case they have been dead for 9.2 billion years.

That's the problem - it's the enormous amounts of time.

What's the chance that we would have met such a civilisation?

zero.

What I find fascinating, is when they discovered all those ancient paintings on rock walls from ancient civilizations, that seem to depict space men, wearing helmets or elephant like breathing aparatas.

They drew it as they saw it.

Probably nothing new to them.

Get the feeling we have been abandoned long ago by any space ancestors if there were any.

Maybe at the time, the few humans that were on the earth, were being watched, to make sure they survived, whereas now, we have procreated to such an extent, why would 'anyone or being out there' be watching us now? And for what reason?

Didn't the meteorites bring life, lots of different bugs etc, onto the planet?

Could that have been some distant planet with life, that exploded, and pieces of that planet (meteorites) drifted for goodness knows how many years, until it reached our earth to collide and therefore make life on here?

I think life started on Mars & came here from meteorites or asteroids from Mars.

In that case we're all Martians.

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Richdude

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Re: Are we alone in the Universe?
Reply #85 - Feb 11^th, 2016 at 3:47am

Bobby. wrote on Feb 10^th, 2016 at 6:52am:

Sophia wrote on Feb 9^th, 2016 at 4:59pm:

Bobby. wrote on Feb 8^th, 2016 at 10:49pm:

As an example -

the Earth is 4.5 billion years old.
We only developed intelligent life after 4.5 billions years that could transmit a radio message
& in only 50 years after that we could have easily been totally wiped out by nukes.
You're looking at a 50 year window in 4.5 billion years.

The Universe is 13.7 billion years old - &
let's say it takes 4.5 billion years to develop intelligent life.
Life could have developed on a planet 13.7 - 4.5 = 9.2 billion years ago
& wiped itself out in only 50 years.

In that case they have been dead for 9.2 billion years.

That's the problem - it's the enormous amounts of time.

What's the chance that we would have met such a civilisation?

zero.

What I find fascinating, is when they discovered all those ancient paintings on rock walls from ancient civilizations, that seem to depict space men, wearing helmets or elephant like breathing aparatas.

They drew it as they saw it.

Probably nothing new to them.

Get the feeling we have been abandoned long ago by any space ancestors if there were any.

Maybe at the time, the few humans that were on the earth, were being watched, to make sure they survived, whereas now, we have procreated to such an extent, why would 'anyone or being out there' be watching us now? And for what reason?

Didn't the meteorites bring life, lots of different bugs etc, onto the planet?

Could that have been some distant planet with life, that exploded, and pieces of that planet (meteorites) drifted for goodness knows how many years, until it reached our earth to collide and therefore make life on here?

I think life started on Mars & came here from meteorites or asteroids from Mars.

In that case we're all Martians.

Yes I saw that movie too - "Mission to Mars" I think it was called.
Were're not all Martians - my wife is from Alpha Centauri.

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The mediocre mind is incapable of understanding the man who refuses to bow blindly to conventional prejudices and chooses instead to express his opinions courageously and honestly.”

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John_Taverner Gold Member Offline Australian Politics Posts: 2217 Gender:	Re: Are we alone in the Universe? Reply #86 - Feb 11^th, 2016 at 4:22pm Bobby. wrote on Feb 10^th, 2016 at 6:52am: I think life started on Mars & came here from meteorites or asteroids from Mars. In that case we're all Martians. Well, you and It_is_the_light are definitely from Mars.
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greggerypeccary Gold Member Offline Australian Politics Posts: 151157 Gender:	Re: Are we alone in the Universe? Reply #87 - Feb 11^th, 2016 at 4:23pm John_Taverner wrote on Feb 11^th, 2016 at 4:22pm: Bobby. wrote on Feb 10^th, 2016 at 6:52am: I think life started on Mars & came here from meteorites or asteroids from Mars. In that case we're all Martians. Well, you and It_is_the_light are definitely from Mars. I always picked Sir Booby as a Uranus sort of guy.
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John_Taverner Gold Member Offline Australian Politics Posts: 2217 Gender:	Re: Are we alone in the Universe? Reply #88 - Feb 12^th, 2016 at 8:59am greggerypeccary wrote on Feb 11^th, 2016 at 4:23pm: I always picked Sir Booby as a Uranus sort of guy. Ouch. Well that's certainly scraping the bottom.
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Sir Grappler Truth Teller OAM

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Re: Are we alone in the Universe?
Reply #89 - Feb 12^th, 2016 at 1:58pm

https://en.wikipedia.org/wiki/Diseases_from_Space

These guys actually go further and suggest that mutations are the result of 'infalling pathogens' to which human and other races adapt and thus develop into what they are today... could be a good argument that we are not entirely terrestrial.... however.. that would also apply across the universe (words are flying out like endless rain into a paper cup).... and so to any other species Out There...

I think the odds are for foreign denizens of other planets..... thing is.. how would they cross the distances any more than we can? Unless there is life closer.... we'll never get to see it....

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