I whouldn't be parically conserend about that, the gravity on earth is the only thing makeing us grow. The consistent pressure of about 40kg on our spine that makes us grow. In fact people that stay in space for long periods suffer srinkage of about 1-2cm per 5 months. So if we did colonise this planet I predict a world of height average 8.1/2 feet or a world of hunchbacks.



We suffer a littlie thing called space-time condencing, if a planet is under pressure the time slows down and a planet with no gravity we whould age 2 times faster. Technecally if you where able to survive on the sun you would be getting younger insted of older.



To do that we whould need to have some sort of device that creates a wormhole and arn't we forgeting that this planet 20 years in the past or 20 years in the future from the perspective of earth.

P.S: If we are going to colonise any world, we need to globolise   .

Why don't you try, and let me know how it was, ok?

okay, this is one hair i have to split. the only thing that affects gravity is mass. rotation speed generates centripedal and centrifugal forces, which can act against gravity. okay, i split my hair, and now i apologize for it   

this is interesting (the original post). i watched a documentary that said scientists recently (recent to whenever the documentary was done) discovered that interstellar medium isn't just hydrogen, helium and dust. there's actually a lot of organic matter in there, and many believe that's what, brought to earth by comets and the like, turned into the amino acids and RNA. maybe we'll find our cousins?

wrong, distances and size also have a big part.

A+ for effort, but you remain an ignorant fish.

we already know how to make artificial gravity ( at least theoretically ) by using centrifugal force.....I'd love to see us develop more in space, I think that is the next major frontier. If we used what we know about using centrifugal force, made an actual space station that had artificial gravity, and with that knowledge created a space city ( hundreds of thousands of people who live in space ), then from there we could alot easier colonize the moon and mars. After that, we could conceivably colonize further out, no matter how long it would take, but without doing the basics, I don't think even in 1,000 years we'll colonize beyond our solar system....

No, Think about, space-time is a fabric anything with surfissent mass generates gravity and dints the space-time around it like this:

http://images.google.com.au/imgres?imgurl=http://www.blog.speculist.com/archives/spacetime.gif&imgrefurl=
http://www.blog.speculist.com/archives/000639.html&h=175&w=300&
sz=22&hl=en&start=2&tbnid=jPGubWJGiQjK0M:&tbnh=68&tbnw=116&prev=/images%3Fq%3DSpace-time%26gbv%3D2%26svnum%3D10%26hl%3Den

It streaches the space-time around it slowing time and space down.



For that I think that we may need to discover new super-heavy elements that can gernerate gravity.

I don't know if it's the documentary you're refering to, but i tend to think that the 13 parter, Cosmos, by Carl sagan has got to be the best along these lines. @0 years old and just now Scientists are realizing how much of the stuff he had in his series was spot on. I'm still amazed by that show.

we are all "star stuff"

Carl Sagan

oops 20 years i meant...

serrian - sorry to burst your bubble, but my name is something I made up about 8 or 9 years ago, playing the original pokemon Red version -- nothing to do with any roller coaster, I hate roller coasters

The apparent decrease in gravitational force as caused by the earth's rotation is on the order of micrometers per second squared, so no, rotation speed is essentialy irrelevant.



Wow, Einstein just turned over in his grave. Time doesn't even stop until you have a gravitation force equal to that at the event horizon of a black hole. The gravitational force of the sun would slow down the passage of time by a few percentage points at the most.

Actually, time doesn't slow down at all if I remember my physics class correctly... not on the inside, at least. From the perspective of someone outside, though, time would be steadily slowing down (and whatever you are observing becoming more and more redshifted) the close you came to the event horizon.

An excellent point. Even if the sun did somehow have a greater gravitational field than a blackhole, and even if was somehow possible to survive while standing on it, you yourself wouldn't notice any difference in the rate at which you age (though the universe around you might seem to be moving rather quickly...).

I doubt it would even be a whole percentage point (the time slowdown).

The only thing we know about that planet is that its in the right place and it has an atmosphere. We also know that it orbits a Red Dwarf star, and is thus very cold, because Red Dwarfs don't provide much heat.

Some scientists think it might hold frozen water, but they draw that conclusion on the scant knowledge we have about the way planets are formed. Other scientists prefer to wait until we have more information to draw conclusions.

We don't know how much gravity it has relative to Earth because we don't know what its made of. If its an ice ball (the very fact this is an option should tell you how little heat a Red Dwarf gives off) the gravity will be about 1.5 that of Earth. If its a solid mass, like Earth, it will be closer to 3 times Earth gravity. The article also mentions that Mars is considered habitable.

You guys are getting way ahead of yourselves.

Isn't that what we sci-fi freaks are known for?

Even if we could build a rocket engine which could hurl colonists or explorers 10x faster then the fastest rocket ever built it would still take about 27,000 years to get there . Exploration of planets outside of our Solar System is going to have to wait for new technological break through . Hopefully some kind of technology will help us to get close to the speed of light someday . If we could even reach 50% the speed of light we could explore a lot of stars within a human life time .

If you are talking about the one at Busch Gardens in Williamsburg.... Goodness gracious that coaster sucked! I am a coaster enthusiast and that particular coaster should be torn down.

As for space travel... I am in the camp that believes the Government/Military has the technology to travel faster than light already. They stole it, after they killed the aliens at Roswell of course.

(Hoping that sparks some interesting conversation.)

And I'm in the camp that says that Roswell was actully a prototype nazi aircraft, after the fall of nazi germeny they (the US) found the plans for it and in theory it could travel half the globe in a day . . . . interesting  



It's not like ether one of us is going to be proven any time soon. so ....  .

if you put two very precise clocks together, and sync them, then put one on a plane, fly it around, the clocks will no longer be in sync when it lands. Theory of Relativity I believe is an attempt to explain this phenomenon. Theory says that for the person, they won't notice the difference who is experiencing the effect...

I'm not exactly sure what causes time differentials, but you hardly need a blackhole to cause differences...

If you had humans living on Mars, I believe they would eventually stop using Earth time, and instead use martian time....Makes you wonder what the life span for a human on mars would be....


regarding what someone said about gravity on the spine, I think there are also growth hormones that come into play, and its not just earth's gravity....

It's also much closer to the star. The whole point is that it's at the right distance to give Earth temperatures, or at least something in that sort of region (about 0-40 degrees centigrade). The fact that the star is giving off less heat has already been taken into account.

I'm pretty sure that we have no way of telling whether or not it has an atmosphere though.

I don't know who told you that? Perhaps your forgetting to consider how far we are away from the centre of the Earth? Anyone knows that the further away you move from the centre of gravity, the faster you spin and the greater the centrifical force.

So if you increased the diameter of the Earth by 3 times, the increased centrifical forces would counteract the increase in mass - to what extent i do not know? We could even end up with less gravity!

hmmm on further consideration.... mebe you are right? I was just wondering why i havn't heard of jets traveling against the Earths rotation, feeling more gravity, which is what would happen if my theory was correct... i must be wrong?

oh also why isnt the gravity higher at the north and south pole? yea i'm definately wrong hehehe

A few comments:
1) When deep diving and the gases start affecting your head, I believe that is called nitrogen narcosis. Which sounds like about the same as getting drunk and losing your ability to reason and make decisions.
2) The body cannot withstand infinite or even very much pressure. For example, after about one or two hundred feet, people can skin dive. With have to start using pressure suits or submarines to go deeper.
3) On a heavier grav world, the water pressure will be even greater, because water pressure depends upon the density of the water (which probably won't change too much, because as stated above, water is mostly incompressible), how many feet down you are and what gravity is. So if you're on a planet with 2 times Earth's grav, water pressure will be twice as much as normal for each foot down.
4) Actually the earth isn't accelerating as it rotates, its moving at a constant angular velocity, so I don't that the rotational speed will have too much effect on gravity.
5) Besides gravity is determined by mass of the planet times a constant term dividing by the distance from the center squared. So a really small really dense body can have a much greater gravity the Earth, think neutron star or black hole. While a really large object that is not dense could have a lighter gravity. So the gravity on the exosolar planets would depend on their densities as well as their diameters.

Sorry for the long rant, I just tried to address some of the questions above.

They don't even know if it actually has water, only that it's orbiting at a distance where liquid water would be possible. It could very well be just a barren piece of rock.

I'd suggest you get a refresher course in physics. Gravity has a direct relationship with mass, and nothing at all to do with rotation speed. All mass has gravity, and the more of it you have in one location the stronger the effect.

For God's sake man, you should really know what you're talking about before you spout off and look the fool. The "Bends" is just the slang word for what was being described before, they are one and the same thing. Read a book instead of counting on Hollywood to give you accurate information. Because they won't.