space questions

[TangerineSteve17]

good post, there was some guy on TV a few weeks back trying to explain if there was an end to the universe, we as humans cant grasp there may be no end because everything we know has or will end, it may end but he was putting forward we may be one universe in amongst millions of others all with different laws of physics, quantum mechanics is very hard to grasp, but one thing is for sure and that's how insignificant we are in scale to our universe let alone millions of other universes

I wouldn't go as far to say we are insignificant. Small definitely. But as far we know so far, we are the only things in the universe actually capable of understanding the damn thing. That makes us very special indeed I think. We'll continue to evolve of course, but unless we get a visit, or possibly more likely visit another earth-like planet, and find intelligent life, we might be the smartest sentient beings in all of time.

Unlikely. When you look at the sheer vastness of the Universe, the chances are stacked extremely highly that there is a lot of life out there. It seems certain that there is life which is way more intelligent than we are.

I hope you're right. I just remember reading something about how finely tuned the Earth is to allow for evolution on this scale to take place. Hey, but I also know the universe is bigger than I could ever imagine. I don't understand our physics, let alone imagine another universe with different ones. I know we've only been here for a blink of an eye, probably a bit over-zealous saying we are very special indeed. I reserve the right to change my mind instantly on that :)

 

[marco]

I wouldn't go as far to say we are insignificant. Small definitely. But as far we know so far, we are the only things in the universe actually capable of understanding the damn thing. That makes us very special indeed I think. We'll continue to evolve of course, but unless we get a visit, or possibly more likely visit another earth-like planet, and find intelligent life, we might be the smartest sentient beings in all of time.

Unlikely. When you look at the sheer vastness of the Universe, the chances are stacked extremely highly that there is a lot of life out there. It seems certain that there is life which is way more intelligent than we are.

I hope you're right. I just remember reading something about how finely tuned the Earth is to allow for evolution on this scale to take place. Hey, but I also know the universe is bigger than I could ever imagine. I don't understand our physics, let alone imagine another universe with different ones. I know we've only been here for a blink of an eye, probably a bit over-zealous saying we are very special indeed. I reserve the right to change my mind instantly on that :)

a habitable zone is around every sun there is, thats tempreture, but that's habitabe to us humans it does not mean alien life cant live elswhere, me i think Mars was once the same as earth and the core has cooled down and the atmosphere sucked off into space, the signs are there with the canyons and rocks that formed the sea beds and the ice in the polar regions,we know there are rocks on earth that have come from Mars and we have certain species living on earth today that can survive the vacuum of space whats to say these didnt come from Mars

 

[TangerineSteve17]

This maybe a completely ridiculous question. But as I can not understand General Relativity, no matter how many times I read it, I'll have to ask it.

This all relies on Gravity being related to mass. (if it doesn't, please don't read on it will be embarrassing).
Could we chip away at the earth and fling out small amounts of the rock at a time (I assume it wouldn't require much energy to propel say 20kg of useless rock past our gravitation pull. If we kept doing this wouldn't we decrease the mass of the earth over time? Thus gravity would eventually be altered and it'd be easier to fly off into space? Even better why not just fill up containers of ocean water, and catapult them off out into space. Is this feasible?

I am aware this might be the dumbest question ever asked.

Also, (if that wasn't enough!) the population is 7billion or so. That's a lot of weight in bodies. When there was just a few thousand people on earth, was gravity different? And if we continue to spawn at this rate, are we steadily increasing gravity? Or are these numbers minuscule in scale of things?

I can't exactly google these questions..

 

[foetus]

Gravity, is it all that?

 

[foetus]

Could we chip away at the earth and fling out small amounts of the rock at a time (I assume it wouldn't require much energy to propel say 20kg of useless rock past our gravitation pull. If we kept doing this wouldn't we decrease the mass of the earth over time? Thus gravity would eventually be altered and it'd be easier to fly off into space? Even better why not just fill up containers of ocean water, and catapult them off out into space. Is this feasible?

Also, (if that wasn't enough!) the population is 7billion or so. That's a lot of weight in bodies. When there was just a few thousand people on earth, was gravity different? And if we continue to spawn at this rate, are we steadily increasing gravity? Or are these numbers minuscule in scale of things?

Answered your own question

 

[marco]

This maybe a completely ridiculous question. But as I can not understand General Relativity, no matter how many times I read it, I'll have to ask it.

This all relies on Gravity being related to mass. (if it doesn't, please don't read on it will be embarrassing).
Could we chip away at the earth and fling out small amounts of the rock at a time (I assume it wouldn't require much energy to propel say 20kg of useless rock past our gravitation pull. If we kept doing this wouldn't we decrease the mass of the earth over time? Thus gravity would eventually be altered and it'd be easier to fly off into space? Even better why not just fill up containers of ocean water, and catapult them off out into space. Is this feasible?

I am aware this might be the dumbest question ever asked.

Also, (if that wasn't enough!) the population is 7billion or so. That's a lot of weight in bodies. When there was just a few thousand people on earth, was gravity different? And if we continue to spawn at this rate, are we steadily increasing gravity? Or are these numbers minuscule in scale of things?

I can't exactly google these questions..

i cant reply to that one TS, but how about this one,terrorists get hold of a pipe similar to a flexible hose off a washer/dryer only much wider,they attach it to a balloon and take it to the edge of earths atmosphere the suction force of the vacuum of space would empty the earth of all its oxygen

 

[TangerineSteve17]

This maybe a completely ridiculous question. But as I can not understand General Relativity, no matter how many times I read it, I'll have to ask it.

This all relies on Gravity being related to mass. (if it doesn't, please don't read on it will be embarrassing).
Could we chip away at the earth and fling out small amounts of the rock at a time (I assume it wouldn't require much energy to propel say 20kg of useless rock past our gravitation pull. If we kept doing this wouldn't we decrease the mass of the earth over time? Thus gravity would eventually be altered and it'd be easier to fly off into space? Even better why not just fill up containers of ocean water, and catapult them off out into space. Is this feasible?

I am aware this might be the dumbest question ever asked.

Also, (if that wasn't enough!) the population is 7billion or so. That's a lot of weight in bodies. When there was just a few thousand people on earth, was gravity different? And if we continue to spawn at this rate, are we steadily increasing gravity? Or are these numbers minuscule in scale of things?

I can't exactly google these questions..

i cant reply to that one TS, but how about this one,terrorists get hold of a pipe similar to a flexible hose off a washer/dryer only much wider,they attach it to a balloon and take it to the edge of earths atmosphere the suction force of the vacuum of space would empty the earth of all its oxygen

Wow, is that what would happen? The space vacuum would suck gas through the tube? That'd be about an 800 mile long tube (I looked it up) Do-able I would have thought.

 

[foetus]

Ever wondered what would happen if a large asteroid hit earth? Wonder no more

[video]https://www.youtube.com/watch?v=PENT_hnyO-o[/video]

 

[Stuuuuuu]

This maybe a completely ridiculous question. But as I can not understand General Relativity, no matter how many times I read it, I'll have to ask it.

This all relies on Gravity being related to mass. (if it doesn't, please don't read on it will be embarrassing).
Could we chip away at the earth and fling out small amounts of the rock at a time (I assume it wouldn't require much energy to propel say 20kg of useless rock past our gravitation pull. If we kept doing this wouldn't we decrease the mass of the earth over time? Thus gravity would eventually be altered and it'd be easier to fly off into space? Even better why not just fill up containers of ocean water, and catapult them off out into space. Is this feasible?

I am aware this might be the dumbest question ever asked.

Also, (if that wasn't enough!) the population is 7billion or so. That's a lot of weight in bodies. When there was just a few thousand people on earth, was gravity different? And if we continue to spawn at this rate, are we steadily increasing gravity? Or are these numbers minuscule in scale of things?

I can't exactly google these questions..

That post is the best thing I've ever read - and I've read 'How To Run A Small B&B'.

At the risk of being Clarkied, I'll just respond to your final point.
The number of people on Earth doesn't affect the total mass bearing down on the planet. When my daughter was born, the molecules that she's composed of didn't just spring up out of nothing. And I'm (fairly) sure she didn't come from outer space. The molecules that she's made of were already on Earth, just in the shape of bananas and walnuts and all the other things my wife ate when she was pregnant.

So if there were no people on Earth, the mass of those 7 billion bodies would still be there, just in different forms.

 

[Zubrman]

This maybe a completely ridiculous question. But as I can not understand General Relativity, no matter how many times I read it, I'll have to ask it.

This all relies on Gravity being related to mass. (if it doesn't, please don't read on it will be embarrassing).
Could we chip away at the earth and fling out small amounts of the rock at a time (I assume it wouldn't require much energy to propel say 20kg of useless rock past our gravitation pull. If we kept doing this wouldn't we decrease the mass of the earth over time? Thus gravity would eventually be altered and it'd be easier to fly off into space? Even better why not just fill up containers of ocean water, and catapult them off out into space. Is this feasible?

I am aware this might be the dumbest question ever asked.

Also, (if that wasn't enough!) the population is 7billion or so. That's a lot of weight in bodies. When there was just a few thousand people on earth, was gravity different? And if we continue to spawn at this rate, are we steadily increasing gravity? Or are these numbers minuscule in scale of things?

I can't exactly google these questions..

i cant reply to that one TS, but how about this one,terrorists get hold of a pipe similar to a flexible hose off a washer/dryer only much wider,they attach it to a balloon and take it to the edge of earths atmosphere the suction force of the vacuum of space would empty the earth of all its oxygen

Wow, is that what would happen? The space vacuum would suck gas through the tube? That'd be about an 800 mile long tube (I looked it up) Do-able I would have thought.

It's been done before:



http://www.imdb.com/title/tt0094012/