| User | Message |
|
 Posted : Thursday, 26 May 2011, 12:22 | Permalink | Mark Here |
HoboBen
  
WW Entries : 9
|
Linkage Possibly nearly-earth-like planet only 20 light years away?
-----
 github |
 | |
|
| Posted : Thursday, 26 May 2011, 12:22 | Permalink | Mark Here |
Jayenkai
| |
That's the hols sorted, then!! | |
| |
|
| Posted : Thursday, 26 May 2011, 12:31 | Permalink | Mark Here |
JL235
WW Entries : 7
|
Double gravity, a "perpetual murky red twilight", thick C02 in the air; sounds much nicer then where I currently live.
-----
PlayMyCode.com - build and play in your browser, Blog, Twitter. | |
| |
|
| Posted : Thursday, 26 May 2011, 15:02 | Permalink | Mark Here |
dna
| |
Yes. It's right next door!!! | | |
|
| Posted : Thursday, 26 May 2011, 16:59 | Permalink | Mark Here |
steve_ancell
|
Now all that is needed is for somebody to invent a spacecraft that is capable of traveling that far in a short space of time, so that the United Nations can go and stick a flag in it and claim it as theirs! 
|edit| With it's mass being six times as that of Earth, that means th gravity would also be six times more than Earth's. I wonder if any trees on it would be short and fat? |edit| | |
| |
|
| Posted : Thursday, 26 May 2011, 20:04 | Permalink | Mark Here |
blanko1324
| |
And some volunteers to go settle it. Sign me up! | |
| |
|
| Posted : Thursday, 26 May 2011, 20:20 | Permalink | Mark Here |
JL235
WW Entries : 7
|
@Steve, gravity doesn't work like that. It also depends on the density of the planet. So the gravity is only twice as strong, not 6 times.
-----
PlayMyCode.com - build and play in your browser, Blog, Twitter. | |
| |
|
| Posted : Thursday, 26 May 2011, 23:45 | Permalink | Mark Here |
steve_ancell
|
@Joe
I was going by this bit of info
 We know that Gliese 581d is about twice the size of Earth (and six times the mass)
As far as I know, gravity is to do with mass not size!
Actually, I'm pretty damn sure I'm right!. Read this: wiki.answers.com/Q/How_does_a_planet%27s_size_relate_to_its_pull_gravity
Actually after reading this I think we are both partially wrong and right at the same time, but I knew it wasn't just about it's size, if the folliwng text is correct of course 
The strength of gravity will be proportional to the mass of the planet, and inversely proportional to the square of its diameter (since the combined effect of the gravity, of different parts of the planet, is that gravity seems to come from the center of the planet). Therefore, if two planets have the same density, but one has twice the diameter of the other, its gravity will be twice as strong (mass = 8 times as much; inverse square of the distance = 1/4).
Read more: http://wiki.answers.com/Q/How_does_a_planet%27s_size_relate_to_its_pull_gravity#ixzz1NX8JZegK
| |
| |
|
| Posted : Friday, 27 May 2011, 00:11 | Permalink | Mark Here |
steve_ancell
|
Ere I just had a brain-fart!...
If that text is correct, then that makes it's gravity twelve times that of ours, not six and definitely not two!
If the mass is six times more than Earth's, and if it were to be the same size, that would make it's gravity six time more than ours. But considering it is also twice the size, that makes it twelve times more!
Blimey!, I can imagine my gonads scraping along the ground already | |
| |
|
| Posted : Friday, 27 May 2011, 00:24 | Permalink | Mark Here |
steve_ancell
|
From the article Despite all this, it would be an ideal place to find some extraterrestrial plant life, and where there are plants there might be animals, specifically animals which have adapted to high gravity, low light, low oxygen environment. So think small and low to the ground with big eyes.
LOL... Sontarians just sprang to mind!  | |
| |
|
| Posted : Friday, 27 May 2011, 03:04 | Permalink | Mark Here |
JL235
WW Entries : 7
|
The article says it has double gravity, so I'm going by their estimate. All I meant is that gravity isn't a dead simple thing to sort out.
-----
PlayMyCode.com - build and play in your browser, Blog, Twitter. | |
| |
|
| Posted : Friday, 27 May 2011, 04:42 | Permalink | Mark Here |
steve_ancell
|
The article says it has double gravity, so I'm going by their estimate. All I meant is that gravity isn't a dead simple thing to sort out.
You're right, it does say that. That seems a bit weird though!. Unless it's due to the fact of the planet being tidal-locked  | |
| |
|
| Posted : Friday, 27 May 2011, 04:45 | Permalink | Mark Here |
steve_ancell
| |
I wonder if they have scanned it for radio signals, although they probably wouldn't tell the public if they found something anyway! | |
| |
|
| Posted : Friday, 27 May 2011, 04:59 | Permalink | Mark Here |
Jayenkai
WW Entries : 103
| |
| Posted : Friday, 27 May 2011, 05:20 | Permalink | Mark Here |
steve_ancell
| |
PMSL | |
| |
|
| Posted : Friday, 27 May 2011, 07:33 | Permalink | Mark Here |
HoboBen
WW Entries : 9
|
It would take several thousand years for a ship to get there with humans on board; accelerating faster than 1g for years is going to be an issue (but on the plus side, accelerate at 1g until you're half way there, then decelerate at 1g, and you get free "gravity" on the ship!). The article says 300,000 years.
Robots wouldn't do badly though. A few centuries? That's hardly any time at all!
What's remarkable is that if the prediction is correct, this is really "in our backyard". We've only really looked at ~500 planets, so for two (including Earth) to be so similar means that earth-like planets aren't that uncommon at all.
-----
github | |
| |
|
| Posted : Friday, 27 May 2011, 11:08 | Permalink | Mark Here |
Stealth
|
only 20 light years
120 trillion miles. Seems a lot farther a way when you put it like that.
-----
Andrew // stealth
"Some people see things as they are and say why? I dream things that never were and say why not?" - Robert Kennedy | |
| |
|
| Posted : Saturday, 28 May 2011, 04:10 | Permalink | Mark Here |
Afr0
WW Entries : 3
|
What's really demotivating about this for most humans is that by the time you were halfway, the time it would take to call your girlfriend on earth would be so long that most people would hang up before a connection had been established!
-----
Afr0 Games
Project Dollhouse on Github - Please fork! | |
| |
|
| Posted : Saturday, 28 May 2011, 04:33 | Permalink | Mark Here |
Jayenkai
WW Entries : 103
|
..... but if they were going to send people, they'd probably want couples, in the hopes that they could colonize/populate the planet once they're there. Your girlfriend would be with you. ... ... for the first year, then you'd argue the rest of the way.
-----
 | |
| |
|
