Super Earths

Mecingo · Post by **Mecingo** » Sat Sep 17, 2011 2:30 pm

http://www.youtube.com/watch?v=Yw6aAq7u ... ture=feedu

49rTbird · Post by **49rTbird** » Sat Sep 17, 2011 3:26 pm

Very neat. Sort of "can I super size that?":D:P:D

MMaggio · Post by **MMaggio** » Sat Sep 17, 2011 5:23 pm

Very nice, but how long is the trip?
And if the planet is much bigger than ours, would we be strong enough to walk or lift anything?

Mecingo · Post by **Mecingo** » Sat Sep 17, 2011 6:04 pm

From post: 115190, Topic: tid=7991, author=MMaggio wrote:Very nice, but how long is the trip?
And if the planet is much bigger than ours, would we be strong enough to walk or lift anything?

If we were to set foot on a planet like that, first are joints would be crushed and we would probably not die instantly but be crushed slowly. So that is a barrier in contacting life if there is any on such a planet.

But Imagine all the land on such a planet, it might seem endless to a civilization that has not yet developed advance transportation.

I find if it would be possible to genetically engineer humans to live on such a massive planet, we would have more room for a population, unlike the fact that this planet is getting crowded and is reaching it's capacity soon, like within the next 100 years.

Which is a big problem.

Post by **Marvin** » Sat Sep 17, 2011 6:06 pm

The Lilliputians could probably survive there. Possibly.

Mecingo · Post by **Mecingo** » Sat Sep 17, 2011 9:03 pm

From post: 115192, Topic: tid=7991, author=Marvin wrote: The Lilliputians could probably survive there. Possibly.

I knew they existed

Maarschalk · Post by **Maarschalk** » Sat Sep 17, 2011 9:27 pm

LOL.......Yes, would be interesting to know if there is life on those exo planets......be it Liliputs or Giants....

:P

Post by **Marvin** » Sat Sep 17, 2011 11:32 pm

It would've been interesting to set something on fire ... just to see how he'd go about putting it out.

Post by **DaveK** » Sun Sep 18, 2011 6:51 am

From post: 115204, Topic: tid=7991, author=Maarschalk wrote:LOL.......Yes, would be interesting to know if there is life on those exo planets......be it Liliputs or Giants....:P

. . . or bacteria

There is a suggestion that the way to "seed" the stars is to send bacteria and let life evolve - long term or what?!

Still, sending our "germs" might not be the best way if the planets aready have life of their own!

SpeedFreek · Post by **SpeedFreek** » Thu Sep 22, 2011 6:11 pm

Actually, surface gravity depends on the density of the mass - i.e the size of the planet compared to its mass.

A rocky planet with 5 times the mass of the Earth, with an iron core like the Earth, would have a radius only 50% larger than the Earth, and a surface gravity 2.2 times that of the Earth.

An icy planet with the same 5x mass of the Earth would be larger, and its surface gravity would be smaller - if it had twice the radius of the Earth it would have only 1.25 times the surface gravity, even though it has 5x the mass.

[Edited on 22-9-2011 by SpeedFreek]