We are alone in the Universe, unless we guess otherwise.

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rainbow
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We are NOT alone in the Universe, unless you're a numbskull!

Post by rainbow » Thu Jun 18, 2020 9:37 am

Galaxian wrote:
Thu Jun 18, 2020 9:31 am
The 10 litre flask and million years scenario is actually from experiments done in laboratories to create life.
https://en.wikipedia.org/wiki/Miller%E2 ... experiment
https://www.discovermagazine.com/planet ... ns-of-life I was already too generous with the time it would take (a million years), so the trillion2 period that you suggest is truly exorbitant. :eddy:
...except that they didn't create life.

Experiment failed so no extrapolation to a million years is possible. Might as well be 1000 000 000 000 000 000 000 000 years, assuming some clumsy lab assistant didn't drop the flask at some point.
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Re: We are NOT alone in the Universe, unless we're dumb!

Post by Hermit » Thu Jun 18, 2020 10:20 am

rainbow wrote:
Thu Jun 18, 2020 8:28 am
Galaxian wrote:
Thu Jun 18, 2020 8:09 am

So Galaxian set him straight: "Life developed within a few hours of any wet tract of Earth reaching a temperature of 10 to 40 degrees Celcius." And that was a conservative assessment, since my calculations had actually shown a few seconds! The reason is that biology is a concomitant of chemistry, and if it takes a million years for an experiment in a 10 litre flask to produce life, a volume of 100km x 100km x 20m deep would only take 1.6 seconds to do so. If you allow for some mixing of necessary chemicals, a few hours is generous.
Yes, but if it takes a trillionty trillion years to produce life in a 10l flask, then it would take 50 billion years.
...since the Earth is only 5 billion years old, life has not yet emerged, never mind intelligent life.

:prof: Which proves by your logic that you don't exist :prof:

:ask:
Um, excuse me, but Glaxative will provide empirical, irrefutable evidence, if necessary, that life developed within a few hours of any wet tract of Earth reaching a temperature of 10 to 40 degrees Celcius (sic).

As for me, I have a very similar hypothesis. Two years ago the Porsche 919 Hybrid EVO recorded a lap time of the Nürburgring's not quite 21 kilometre long Nordschleife in five minutes and 19.545 seconds. Had the Nordschleife been as long as all currently existing roads on this planet combined, the Porsche would have finished the lap two days, four hours, three minutes and 37.917 seconds before it took off at the start line. Had the Nordschleife been as long as the distance between Sol and Alpha Centauri, the car would have crossed the finish line before the circuit was even built.
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Re: We are alone in the Universe, unless we guess otherwise.

Post by Seabass » Thu Jun 18, 2020 6:27 pm

:shock:

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Re: We are alone in the Universe, unless we guess otherwise.

Post by Brian Peacock » Thu Jun 18, 2020 8:10 pm

Seabass wrote::shock:

It's all done with CGI.

#FAKELAP
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Re: We are alone in the Universe, unless we guess otherwise.

Post by LucidFlight » Thu Jun 18, 2020 8:22 pm

Yeah, it's probably not even a real car.

I don't know why, but that initial sweeping left-hander around Metzgesfeld always terrifies me.
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Re: We are alone in the Universe, unless we guess otherwise.

Post by laklak » Thu Jun 18, 2020 9:37 pm

Therefore, make peace with your god,
Whatever you perceive him to be - hairy thunderer, or cosmic muffin.
With all its hopes, dreams, promises, and urban renewal,
The world continues to deteriorate.
Give up!
You are a fluke of the universe.
You have no right to be here.
And whether you can hear it or not,
The universe is laughing behind your back.

- Deteriorata
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Re: We are alone in the Universe, unless we guess otherwise.

Post by Woodbutcher » Thu Jun 18, 2020 11:33 pm

laklak wrote:
Thu Jun 18, 2020 9:37 pm
Therefore, make peace with your god,
Whatever you perceive him to be - hairy thunderer, or cosmic muffin.
With all its hopes, dreams, promises, and urban renewal,
The world continues to deteriorate.
Give up!
You are a fluke of the universe.
You have no right to be here.
And whether you can hear it or not,
The universe is laughing behind your back.

- Deteriorata
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Re: We are alone in the Universe, unless we guess otherwise.

Post by Hermit » Fri Jun 19, 2020 3:04 am

Brian Peacock wrote:
Thu Jun 18, 2020 8:10 pm
Seabass wrote::shock:

It's all done with CGI.

#FAKELAP
Topped out at 369km/hr along the Döttinger Höhe straight (4:59). If that were possible, Glaxative would have said so by now. He knows everything that's possible, especially stuff we mistakenly regard as impossible.
I am, somehow, less interested in the weight and convolutions of Einstein’s brain than in the near certainty that people of equal talent have lived and died in cotton fields and sweatshops. - Stephen J. Gould

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Re: We are alone in the Universe, unless we guess otherwise.

Post by JimC » Fri Jun 19, 2020 3:19 am

Well, it is hard for sheeple to know stuff... :tea:
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Re: We are alone in the Universe, unless we guess otherwise.

Post by rainbow » Fri Jun 19, 2020 9:54 am

laklak wrote:
Thu Jun 18, 2020 9:37 pm
Therefore, make peace with your god,
Whatever you perceive him to be - hairy thunderer, or cosmic muffin.
With all its hopes, dreams, promises, and urban renewal,
The world continues to deteriorate.
Give up!
You are a fluke of the universe.
You have no right to be here.
And whether you can hear it or not,
The universe is laughing behind your back.

- Deteriorata
:sulk: Noodle :sulk:
I call bullshit - Alfred E Einstein
BArF−4

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Re: We are alone in the Universe, unless we guess otherwise.

Post by Brian Peacock » Fri Jun 19, 2020 12:10 pm

New Calculations Hint There Could Be at Least 36 Alien Civilisations in Our Galaxy

The fact of human existence is evidence that technologically advanced life is possible in the Universe, yet all our searches for other civilisations have turned up exactly nothing. Since Earth harbours the only proof of life we have, it's difficult to know just how common - or rare - it is.

A new method for estimating the likelihood of life arising beyond Earth gives reason for hope, though. According to the parameters used, there should be at least 36 advanced civilisations capable of broadcasting communication signals in the Milky Way galaxy, although the number could be even higher.

"There should be at least a few dozen active civilisations in our galaxy under the assumption that it takes 5 billion years for intelligent life to form on other planets, as on Earth," explained astrophysicist Christopher Conselice from the University of Nottingham in the UK.

"The idea is looking at evolution, but on a cosmic scale. We call this calculation the Astrobiological Copernican Limit."

There are several parameters that can be used to estimate the number of intelligent civilisations in the galaxy. Conselice and his colleague, engineer Tom Westby, developed a scale of calculations, based on the number of parameters they included.

For the very weakest Astrobiological Copernican Limit, the team assumed that intelligent life arises wherever possible - on rocky planets in the habitable zones of host stars of sufficient age and metallicity - and persists for the entire life of the star.

For the other three limits, timeframes were set for when advanced civilisations could have emerged, based on Earth. It took around 4.5 billion years for advanced technological civilisation to spring up here; the first radio signal was only transmitted in 1895.

So, for the strongest Astrobiological Copernican Limit, the parameters included a star with Sun-like metallicity, and an age of between 4.5 billion years and 5.5 billion years. Assuming that the lifespan of a communicating civilisation is around 100 years (roughly how long humans have been transmitting signals), the lower limit on the number of civilisations is 36...

https://www.sciencealert.com/new-calcul ... our-galaxy
:alien: :alien: :alien: :alien: :alien: :alien:
:alien: :alien: :alien: :alien: :alien: :alien:
:alien: :alien: :alien: :alien: :alien: :alien:
:alien: :alien: :alien: :alien: :alien: :alien:
:alien: :alien: :alien: :alien: :alien: :alien:
:alien: :alien: :alien: :alien: :alien: :alien:
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"This is how humanity ends; bickering over the irrelevant."
Clinton Huxley » 21 Jun 2012 » 14:10:36 GMT
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Re: We are alone in the Universe, unless we guess otherwise.

Post by NineBerry » Fri Jun 19, 2020 12:14 pm

Calculations...

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Re: We are alone in the Universe, unless we guess otherwise.

Post by pErvinalia » Fri Jun 19, 2020 12:15 pm

Yeah. They may as well have rounded up to 42. Makes about as much sense.
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Re: We are alone in the Universe, unless we guess otherwise.

Post by JimC » Fri Jun 19, 2020 9:17 pm

It's not the final figure that is particularly vital, but the range of possible assumptions in various scenarios are interesting. They do seem to be assuming that once life arises, intelligent life is a certainty. Many consider the evolution of intelligence to be somewhat of a fluke...
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Re: We are alone in the Universe, unless we guess otherwise.

Post by Woodbutcher » Sat Jun 20, 2020 1:14 am

JimC wrote:
Fri Jun 19, 2020 9:17 pm
It's not the final figure that is particularly vital, but the range of possible assumptions in various scenarios are interesting. They do seem to be assuming that once life arises, intelligent life is a certainty. Many consider the evolution of intelligence to be somewhat of a fluke...
We're not there yet. :cranky:
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