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re: NASA finds habitable planet – Kepler-186f – but don’t pack just yet

Posted on 4/18/14 at 10:37 am to
Posted by Aux Arc
SW Missouri
Member since Oct 2011
2184 posts
Posted on 4/18/14 at 10:37 am to
I believe humans will be gone from the planet before we have the capability to travel that far.

I think I may be in the minority who think it is possible that earth contains the only life in the universe. It is not necessarily a religious viewpoint, but an acknowledgement that life is really hard to sustain and even harder to generate.

What is the currently accepted science on how life started from non-life?
Posted by Wanderin Reb
Gallifrey
Member since Jun 2013
10738 posts
Posted on 4/18/14 at 11:03 am to
Magic.
Posted by Kentucker
Cincinnati, KY
Member since Apr 2013
19351 posts
Posted on 4/18/14 at 11:43 am to
quote:

So any pictures we get from this planet would be from the year 1524.... this might not reflect much on them but, it sure as hell would if they were looking back at us....


Great observation. Yes, the light arriving at 186f is from 1524 earth. If there is a civilization there that's at least advanced as us, then they'd be able to see that earth is inhabited.

They wouldn't know if we are intelligent though. We've been broadcasting for only the past 100 years or so and it would be another ~400 years before those signals reached 186f.
Posted by Greenfloridan
Jax Beach FL/ Oxford MS
Member since Mar 2014
364 posts
Posted on 4/18/14 at 11:50 am to
I don't like space.. I'm going to chill on a beach in Florida.
Posted by Kentucker
Cincinnati, KY
Member since Apr 2013
19351 posts
Posted on 4/18/14 at 11:51 am to
quote:

I know where the optimism comes from but keep in mind: We haven't even been able to land a person on Mars, let alone travel 3 trillion miles away. Mars is a 9 month trip and you have to think how far away we are with sustaining life -- let alone sustaining life at quantum levels. We will need to adapt our bodies, ships and materials for that and we're no where -near- close. China could barely keep contact with its rover on the Moon and the United States is still the only country to land a rover anywhere else that's successful.


Physics at the quantum level is weirder than can be imagined. We are composed of quantum level particles so it's logical to think that quantum physics' laws can apply to us as "macroscopic" assemblages of particles.

For example, quantum computers are in the very early stages of development. Their distinct advantage over digital computers? Processing ability on the order of the human brain. In fact, many scientists think our brains are quantum computers.
Posted by Kentucker
Cincinnati, KY
Member since Apr 2013
19351 posts
Posted on 4/18/14 at 11:55 am to
quote:

I think I may be in the minority who think it is possible that earth contains the only life in the universe.


Until extraterrestrial life is discovered your conclusion will remain valid.
Posted by BarberitosDawg
Lee County Florida across causeway
Member since Oct 2013
9914 posts
Posted on 4/18/14 at 12:02 pm to
Somebody harped on it earlier and I wonder how long our minds can hold data? If we can extend life 100 years or such do we have a Y2K glitch built in?

If you froze someone for a 490 years so they could take the trip would they wake up with a blank mind?

Probably better to just send some DNA and an eight track player....
Posted by Kentucker
Cincinnati, KY
Member since Apr 2013
19351 posts
Posted on 4/18/14 at 12:23 pm to
quote:

What is the currently accepted science on how life started from non-life?


First we have to answer the question: What is life? Philosophically, I'm a reductionist so I prefer the premise that life is a chemical chain reaction.

Very simply stated: Atoms react to form molecules which form amino acids; amino acids form proteins which go on to build cells and then multicellular organisms. At what stage can we say life exists in this chain reaction?

Most debate centers on viruses. More and more biologists are agreeing that viruses are the most primitive life forms. The majority still hold that single cell organisms are the beginning stage of life, however.

I agree with those who say that viruses are alive. Although viruses do not possess a cell membrane or metabolize on their own, they can make use of cells to perform those functions. They have to parasitize the cells but I don't think that puts them into the category of the nonliving.
This post was edited on 4/18/14 at 1:06 pm
Posted by Kentucker
Cincinnati, KY
Member since Apr 2013
19351 posts
Posted on 4/18/14 at 12:32 pm to
quote:

Magic.


"Any sufficiently advanced technology is indistinguishable from magic." - Isaac Asimov
This post was edited on 4/18/14 at 12:41 pm
Posted by Kentucker
Cincinnati, KY
Member since Apr 2013
19351 posts
Posted on 4/18/14 at 12:39 pm to
quote:

Somebody harped on it earlier and I wonder how long our minds can hold data?


Holding data needs to be distinguished from processing data. We passed our ability to hold voluminous amounts of information long ago.

We discovered that retaining data was not possible so we invented computers that helped us store it. We routinely tap into this stored data as we live our lives.

The biggest data storage device is, of course, the internet and I've been consulting it frequently in discussion about this thread's topic.
Posted by Kentucker
Cincinnati, KY
Member since Apr 2013
19351 posts
Posted on 4/18/14 at 12:55 pm to
quote:

Somebody harped on it earlier and I wonder how long our minds can hold data?


I think I misunderstood your question. So sorry.

The brain's hippocampus and amygdala help process memory. Where it goes exactly for storage is unknown.

It's safe to say, though, that if our biological processes can be put into a successful stasis, the neuronal arrangements of our memories will remain as unchanged as the rest of the cells that make us up.
Posted by StrawsDrawnAtRandom
Member since Sep 2013
21146 posts
Posted on 4/18/14 at 6:26 pm to
Abiogenesis.
Posted by Kentucker
Cincinnati, KY
Member since Apr 2013
19351 posts
Posted on 4/18/14 at 6:53 pm to
quote:

Abiogenesis.


As opposed to biogenesis, which is the creation of living organisms by other living organisms. We're on the verge of creating life in labs.

My question: Can there be more than one tree of life? On earth we have one very well established tree with branches that account for every single species.

This tree is based on 4 nucleotides. Will we be able to assemble artificial DNA using other amino acids? Will we find extraterrestrial life with a different DNA base?

Why did only one tree of life come to be? Is there only one formula for life?

We live in a thrilling age of discovery.
This post was edited on 4/18/14 at 6:54 pm
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