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(Tech Stew)   Astronomers discover a potentially habitable Super-Earth 42-light years from Earth   (tech-stew.com) divider line 12
    More: Cool, light-years, Earth, population of the world, astronomers, University of Hertfordshire, Goldilocks, rocky planet, data analysis  
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3835 clicks; posted to Geek » on 08 Nov 2012 at 4:24 PM (1 year ago)   |  Favorite    |   share:  Share on Twitter share via Email Share on Facebook   more»



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2012-11-08 01:06:21 PM
2 votes:
7 times as large as the earth - I don't think you fools understand the gravity of this situation...
2012-11-09 08:11:27 AM
1 votes:

2words1finger: Seeing as that we currently can't get humans any farther out into space than a couple hundred miles, I don't really see the point. It's not like we're ever going to get to this planet, so who cares? All the money they're spending on BS programs like this could be put to much better use developing useful technologies like sustainable energy or better farming techniques to help feed the hundreds of millions of starving people in the world. Cosmology is nothing but a sunk cost. Paying for a bunch of pasty nerds to stare at the stars and fantasize about a bunch of Star Trek bullshiat serves no practical purpose for humanity. I seriously do not understand why we waste money on stuff like this.


old and busted: trolling the geek tab with religion bashing. New hotness: trolling the geek tab with astronomy bashing.
2012-11-08 07:13:11 PM
1 votes:
These articles drive me nuts. There's more to making a planet habitable to humans than being in the Goldilock Zone. and being a rocky planet. The size of the planet also matters. Too big and it's gravity will not allow for mountains high enough to make land masses and you'll effectively have a water world, too small and it won't be able to maintain an atmosphere and surface water (think Mars). If a planet has 7 times the mass of Earth then it won't matter that it's in the Goldilock Zone and it won't matter that its a rocky planet. We can't live on it.
2012-11-08 06:43:52 PM
1 votes:

Malivon: kimwim: So with our present technology, solar sails, radiaoactivaty, the whole thing: how many generations would it take us to get there?

We wouldn't make it.

Genetically speaking of course.

We'd need a ship large enough to sustain the population and a population that would ultimately be sustaining (both in number, but also in diversity).


Current tech: female crew, lots of frozen sperm and frozen eggs from a large population sampling, in vitro fertilization and select for female gender until destination reached. Name the ship the Theotokos and troll billions.

Future tech: much the same, but artificial wombs activated after reaching the target planet. 

Future's tomorrow: nanotech and stored patterns.
2012-11-08 05:52:14 PM
1 votes:

kimwim: So with our present technology, solar sails, radiaoactivaty, the whole thing: how many generations would it take us to get there?


We wouldn't make it.

Genetically speaking of course.

We'd need a ship large enough to sustain the population and a population that would ultimately be sustaining (both in number, but also in diversity).
2012-11-08 05:40:52 PM
1 votes:

Theory Of Null: That planet holds the answer to life the universe and everything


i50.tinypic.com

Forty-Two!
2012-11-08 05:40:52 PM
1 votes:
I think you guys are missing an important detail... it is 42 light years away, the question waits for us there!
2012-11-08 02:01:50 PM
1 votes:

TheHighlandHowler: kimwim: So with our present technology, solar sails, radiaoactivaty, the whole thing: how many generations would it take us to get there?

~700,000 years


That sounds about right. Last time I ran the numbers, the fastest proposed propulsion system currently under serious study would go 20 light years in about 47,000 years. So if we throw in a bit of semi-plausible sci-fi, we might be able to get the one-way trip to this place under 100,000 years.
2012-11-08 01:48:51 PM
1 votes:
PREPARE THE GENERATION SHIPS.
2012-11-08 01:45:38 PM
1 votes:

kimwim: So with our present technology, solar sails, radiaoactivaty, the whole thing: how many generations would it take us to get there?


~700,000 years
2012-11-08 01:13:06 PM
1 votes:
For example, Saturn has many times the mass of Earth, and is vastly larger, but if you could stand on the "surface" the gravity you would experience is only about 0.9G
2012-11-08 01:10:03 PM
1 votes:

Elzar: 7 times as large as the earth - I don't think you fools understand the gravity of this situation...


It's all about density. A planet can be seven times bigger, but if it's density remained the same as Earth's the gravity might not change all that much, because the surface farther from the center of mass.
 
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