Author Topic: Gliese - 581G?  (Read 140 times)

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Offline Cariad†

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Gliese - 581G?
« on: November 28, 2012, 08:52:55 AM »
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Anybody heard of it? An exoplanet around 20 LR away. Super earth classified and is right in the habitable zone of it's parent red dwarf star. Life chances are VERY high if it's atmosphere has the right stuff in it. However it's tidally locked(like the moon) making it always day on one end and always night on the other. The place where night and day meet however is a promising area for life. What do you think about it?

Offline ๖Ϝцzsioᴎ

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Re: Gliese - 581G?
« Reply #1 on: November 28, 2012, 09:03:19 AM »
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Uh, what?
I don't even know what topic you're talking about.

Offline Supertoaster

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Re: Gliese - 581G?
« Reply #2 on: November 28, 2012, 09:19:55 AM »
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Uh, what?
I don't even know what topic you're talking about.
we found a star system with a planet that may have life   .                    

Offline Prox

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Re: Gliese - 581G?
« Reply #3 on: November 28, 2012, 10:02:59 AM »
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I did heard of it and the chances of life on it surely seem great compered to the other exoplanets but since it's parent star is a red dwarf the planet needs to be fairly close to it to get enough heat and red dwarfs have powerful flares that could make it difficult for life on the planet if it does not have a magnetic field. Despite all that it is still possible for life to exist.

Video related: Alien Planets & Eyeball Earths: The Search for Habitable Planets



« Last Edit: November 28, 2012, 10:16:26 AM by Prox »


Offline Xrain

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Re: Gliese - 581G?
« Reply #4 on: November 28, 2012, 10:03:34 AM »
+1
Anybody heard of it? An exoplanet around 20 LR away. Super earth classified and is right in the habitable zone of it's parent red dwarf star. Life chances are VERY high if it's atmosphere has the right stuff in it. However it's tidally locked(like the moon) making it always day on one end and always night on the other. The place where night and day meet however is a promising area for life. What do you think about it?

I read about it as well, it's amazing that we are finding small planets like that so "close" to earth.

Though I wouldn't be too hopeful about it holding life, as Venus is close to the goldilocks zone, but it is one of the most inhospitable planets in the solar system.

There are simply far too many factors that influence a planet's habitability to make too many assumptions yet. But it is definitely the most promising planet that we have discovered as far as possibly practically finding life outside our solar system.

I just wish 20 light years wasn't so far away.

Even if we had a spacecraft that could go 0.5 light speed (an unimaginably fast speed; to put it in perspective, a 4000 lb spacecraft going 0.5 light speed has a kinetic energy equivalent to the energy released by a 9571 Megaton Nuclear bomb)

At 0.5 light speed it would take 40 years to go to the planet (assuming it can start and stop instantly) and then another 20 years for the data from the spacecraft to start coming back to earth.
40 years is an ungodly long time for a spacecraft to survive, only the Voyager spacecraft are near that mark with Voyager 2 at 35 years 3 months of age and still going strong. So it's possible for us to reach it, but it definitely wont be easy.

The closest we have come to 0.5 light speed, is the Helios 1 spacecraft which managed to travel at 0.0002342 Light speed (157,078 mph)

Xrain for spacemission Gliese - 581G anyone?
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Offline Alkaline

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Re: Gliese - 581G?
« Reply #5 on: November 28, 2012, 01:23:12 PM »
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Xrain for spacemission Gliese - 581G anyone?

Too risky. We would all die off before you reached Gliese.
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Re: Gliese - 581G?
« Reply #6 on: November 28, 2012, 01:47:59 PM »
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Gliese 581 A, B, C, D, E, F, G... Aaabbyz...

Too risky. We would all die off before you reached Gliese.

But this is why we have to start the whole Live Forever thing going on.

Or let our descendants see Xrain come back with spess ladies.


Offline Cariad†

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Re: Gliese - 581G?
« Reply #7 on: November 28, 2012, 02:11:34 PM »
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2 billion years from now the Earth will be too hot for water to be sustained due to the Sun going red giant. We'd have to find another planet in another solar system some time. Besides, we've had technology for hardly that long. Imagine what we can do in another 100 - 200 years. Even 500.

Quote
Though I wouldn't be too hopeful about it holding life, as Venus is close to the goldilocks zone, but it is one of the most inhospitable planets in the solar system.
That's because Venus has a carbon rich atmosphere that doesn't let ANY heat escape. My theory is that when the Solar System formed it took most of the gasses leaving the rest for Earth, and Mars.
« Last Edit: November 28, 2012, 02:13:23 PM by Cariad »

Offline Tezuni

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Re: Gliese - 581G?
« Reply #8 on: November 28, 2012, 08:28:08 PM »
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Probably not habitable for humans though as the gravity would probably be crushing.

However, I love the idea of space colonization and expanding humanity beyond earth. 

Instantaneous communication (across any distance) technology is already feasible due to quantum entanglement, but I don't know how we will physically get to places light years away. 

Wormholes anyone?
« Last Edit: November 28, 2012, 08:29:46 PM by Tezuni »

Offline Cake Faice

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Re: Gliese - 581G?
« Reply #9 on: November 29, 2012, 02:11:36 PM »
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40 years is an ungodly long time for a spacecraft to survive, only the Voyager spacecraft are near that mark with Voyager 2 at 35 years 3 months of age and still going strong. So it's possible for us to reach it, but it definitely wont be easy.
We should research worm holes.

Offline Tezuni

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Re: Gliese - 581G?
« Reply #10 on: November 29, 2012, 09:15:11 PM »
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We should research worm holes.

Yeah I agree, besides on the galactic scale, light speed is a crawl.  Not to mention it'd allow for time travel.  <-- probably not good

Going through a wormhole instead of traveling at light speed is like walking through a mountain tunnel rather than running all the way around it.  It's a lot faster.

Now, if we could go light speed through worm holes (running through the tunnel).....that'd be the fastest.

Offline Cake Faice

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Re: Gliese - 581G?
« Reply #11 on: November 29, 2012, 09:17:46 PM »
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Now, if we could go light speed through worm holes (running through the tunnel).....that'd be the fastest.
Wouldn't you also have to hope that the wormhole will spit you out in the right place at the right time?

Offline Tezuni

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Re: Gliese - 581G?
« Reply #12 on: November 29, 2012, 09:39:38 PM »
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Wouldn't you also have to hope that the wormhole will spit you out in the right place at the right time?

Well just go back through it if you don't like where you ended up :d

I was watching a video about them, and apparently, they form a connection very briefly then separate into points (like two cones) as they recede to their own event horizons. 

So if you go in after it separates, you'd be crushed into a tiny little point.

Offline Cariad†

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Re: Gliese - 581G?
« Reply #13 on: November 29, 2012, 11:05:14 PM »
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Probably not habitable for humans though as the gravity would probably be crushing.

However, I love the idea of space colonization and expanding humanity beyond earth. 

Instantaneous communication (across any distance) technology is already feasible due to quantum entanglement, but I don't know how we will physically get to places light years away. 

Wormholes anyone?
Actually, we would weigh a little over twice of what we weigh now. So it's somewhat habitable.

Well just go back through it if you don't like where you ended up :d

I was watching a video about them, and apparently, they form a connection very briefly then separate into points (like two cones) as they recede to their own event horizons. 

So if you go in after it separates, you'd be crushed into a tiny little point.
Actually, Wormholes are not yet proven(yet). However, if we were to go through one there's no telling where(or when) it would come out. It could come out inside of a star, or even inside of a black hole.
« Last Edit: November 29, 2012, 11:06:55 PM by Cariad »

Offline Supertoaster

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Re: Gliese - 581G?
« Reply #14 on: November 29, 2012, 11:42:48 PM »
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Since its a red dwarf star the planet would need to be very close to the star to have habitable temps. This would result in the planet being tidally locked (permanent daytime on one side, permanent night time on the other). Then this would cause very strong winds blowing around the planet and giant storms. Water would probably be only on the parts of the planet between the night side and day side.