Mars's core cooled 4 billion years ago so there is no vulcanism on mars (or a magnetic field to protect you from the solar wind either)Raiyan 1.0 said:
Microgravity Makes Interstellar Travel Impossible, Say Experts
- Thread starter Hevva
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I think the biggest problem is the effects on a developing fetus, not the end result.omicron1 said:
Oh really?
Like how if you go faster than 60 mph your organs will liquify?
Or how we can NEVER break the sound barrier?
Or how no object in the universe can go faster than light?
Listen guys, you know a lot. You have figured out a fare bit of the world we live in. But PLEASE stop saying things are impossible. They almost never are.
Like how if you go faster than 60 mph your organs will liquify?
Or how we can NEVER break the sound barrier?
Or how no object in the universe can go faster than light?
Listen guys, you know a lot. You have figured out a fare bit of the world we live in. But PLEASE stop saying things are impossible. They almost never are.
Why exactly is this an obtsacle? We're not going to send colonists into space if it's going to take centuries to reach the destination unless some very bad things are happening in Sol ... even then I'd say the greatest threat is people.
What do you think are the chances a person is going to succumb to psychological weaknesses when they spend decades in space?
Knowing that I will spend all of my life in a tiny little room, and corridors of plastic and steel, and that all too thin veneer of the hull seperated me from life and death and the *millions* of things that can go wrong .... well ... I think I'd lose it.
Lets remove Murphy's Law for a moment (which is a big fucking consideration given it is a craft thatmust be immensely powerful, and has to support the livelihoods of hundreds, if not thousands, of people for a century) ... what exactly do you do when you get there?
You make it to Sol's closest star and find out it's not such a great place (nigh inhospitable) to start a coloy .... what exactly would be the point of such an endeavour? You send a transmission back to Earth and hope that in the hundred of years it's taken you to get out here that Earth still cares about your predicament, if only because they have these lovely new warp nacelles that can go a million times quicker then your little piddly craft?
What do you think are the chances a person is going to succumb to psychological weaknesses when they spend decades in space?
Knowing that I will spend all of my life in a tiny little room, and corridors of plastic and steel, and that all too thin veneer of the hull seperated me from life and death and the *millions* of things that can go wrong .... well ... I think I'd lose it.
Lets remove Murphy's Law for a moment (which is a big fucking consideration given it is a craft thatmust be immensely powerful, and has to support the livelihoods of hundreds, if not thousands, of people for a century) ... what exactly do you do when you get there?
You make it to Sol's closest star and find out it's not such a great place (nigh inhospitable) to start a coloy .... what exactly would be the point of such an endeavour? You send a transmission back to Earth and hope that in the hundred of years it's taken you to get out here that Earth still cares about your predicament, if only because they have these lovely new warp nacelles that can go a million times quicker then your little piddly craft?
this isnt really news... I've seen a show about it a while back, and they said that we wont be able to be born and grow in space, unless we'd create artificial environments, which is a very possible solution...
so, now that this problem's solved, lets get back at acquiring faster-then-light speed again, shall we?
so, now that this problem's solved, lets get back at acquiring faster-then-light speed again, shall we?
SERIOUS QUESTION!
why not just accelerate at a constant velocity = 1g
and decelerate half way from your target at a constant rate of - =1g
seriously? newton? anyone?
no ???
ion drives front and back, with thick shielding to protect from debris, and a spherical ship in the middle that can rotate so it is always facing away from acceleration
you could even turn the ion drives around as-well, so they both point the same way
it's a fact to even get up-to speeds capable of traversing the galaxy you'd have to accelerate for months with any current technology, so why not just use that to your advantage?
i really think that could work
but you still come back to the power / fuel requirements.
anything but ion is too fuel inefficient, but ion is too slow accelerating
what we need is a super ion drive ( impulse )
and a battery the size of a plannet.
actually, a diesel generator ion engine would be the roflcake
they had one on red dwarf. epic comedy value. all the worst parts of every drive system
i guess nuclear / uber ion is the only real option right now
it's just a matter of tricking ion drives into producing actual acceleration
and, i already know the spinning wont work, the ship has to be radically large to make that even feasible which means it needs a drive unit the size of an oil rig to spin it constantly
it just doesn't work.
all you'd need is a really enormous capacitor to store the power and some derivative of a steam engine or photo receptor to convert the light to power
that way you solve the ion engine fuel issue
but obviously you need to send the enormous laser out first, and create a ferry link.
this could be done with robots.
if you really want to get clever, you could fit it with a alcubierre drive
( WARP DRIVE )
really.
go look it up.
and that would tip the balance.
why not just accelerate at a constant velocity = 1g
and decelerate half way from your target at a constant rate of - =1g
seriously? newton? anyone?
no ???
ion drives front and back, with thick shielding to protect from debris, and a spherical ship in the middle that can rotate so it is always facing away from acceleration
you could even turn the ion drives around as-well, so they both point the same way
it's a fact to even get up-to speeds capable of traversing the galaxy you'd have to accelerate for months with any current technology, so why not just use that to your advantage?
i really think that could work
but you still come back to the power / fuel requirements.
anything but ion is too fuel inefficient, but ion is too slow accelerating
what we need is a super ion drive ( impulse )
and a battery the size of a plannet.
actually, a diesel generator ion engine would be the roflcake
they had one on red dwarf. epic comedy value. all the worst parts of every drive system
i guess nuclear / uber ion is the only real option right now
it's just a matter of tricking ion drives into producing actual acceleration
and, i already know the spinning wont work, the ship has to be radically large to make that even feasible which means it needs a drive unit the size of an oil rig to spin it constantly
it just doesn't work.
i actually had an idea about that, if you built an enormous laser at the destination, and shone it at the craft to power it you could 'suck' the craft towards you by using an ion drive powered by the lasersteeple said:
all you'd need is a really enormous capacitor to store the power and some derivative of a steam engine or photo receptor to convert the light to power
that way you solve the ion engine fuel issue
but obviously you need to send the enormous laser out first, and create a ferry link.
this could be done with robots.
if you really want to get clever, you could fit it with a alcubierre drive
( WARP DRIVE )
really.
go look it up.
and that would tip the balance.
yay me 10 space travel 0
most people just don't realize how many problems space travel would bring with it
and the space travel is only a small part of the problem
to actually find something in space is almost impossible
i mean people complain now that scientists are idiots...what if those said idiots got all the coordinates wrong by a few million light years
then we'll just drift through space until we either get destroyed or destroy ourselves
most people just don't realize how many problems space travel would bring with it
and the space travel is only a small part of the problem
to actually find something in space is almost impossible
i mean people complain now that scientists are idiots...what if those said idiots got all the coordinates wrong by a few million light years
then we'll just drift through space until we either get destroyed or destroy ourselves
The Lugz said:
That is the generally most accepted form of practical space travel among theorists and hard scifi-geeks. 1 gee turns out to plenty of acceleration if you keep at it for years on end.
Due to time dilation as you go faster and faster, you will actually be able to travel incredibly far in your life time. If you by that method navigated towards the Andromeda Galaxy, some 2 million light years away, you might be surprised to find out that you would actually arrive there in a "mere" 28 years. Of course, would you make the round trip of 56 years you would be sad to find that 4 million years would have passed on the Earth.
By the same token, travel to a star within our galaxy, taking on the order of several years, would have you "lose" hundreds and even thousands of years after just a few journeys compared to someone back on Earth.
So although it's feasible for interplanetary (intrastellar) travel, the time travelling involved quickly becomes very uncomfortable for larger distances.
Depends on how you go about it. Many scientists get someone else to do it. Stupid people tend to do their own experiments.Jegsimmons said:
That's fine, but don't be surprised when a dozen people sitting around determining cost-benefit actually do decide to make judgments based on what is currently known and understood.Akytalusia said:
Current model has interstellar travel as a bigger waste of money than a chain of clothing stores in a nudist colony.
I thought we already have artificial gravity, if we really want it. You know, spin the ship at the correct speed and let the physics do the rest. Sure, you'd still get lower gravity as you move towards the center of the ship's structure, but just make sure the living quarters are in the outer sections and there you go, Earth gravity. Fill the center of the ship with machinery and such that doesn't need people poking through it all the time.
The other problem (and probably the more serious) is that you would need to either bring a fuel source with you that could produce 1 G of acceleration for 100 years or devise a way to puck up fuel along the way (while moving at relatavistic speeds). I'm not sure if those huge hydrogen scoops various science fiction authors have proposed would be able to provide enough fuel to sustain 1 G acceleration (or anything even close).hittite said:
EDIT: Considering you would reach 95% of light speed after only 90 minutes of accelerating at 9.8 meters per second squared, if you could devise a technology that allowed you to maintain constant 1-G acceleration, the issue of creating generation ships would become moot for anything short of intergalactic distances. Without brushing up on relativity, I can't give exact figures, but a journey of 100 light years would occupy (from the perspective of people on the ship) a duration of years (if not months) due to time dilation. It would still take over a century from the perspective of people on Earth.
Does anyone really thinks about trying it ?Hevva said:
Let's face it - until we're a little bit closer to our sci-fi reality there's no plausible argument for doing it.
1. Create a space ship where all of the living quarters constantly rotate around the centre of the ship to imitate gravity
2. Go with family to superdense planet (most likely) made of diamond
3. ???
4. HUGE FUCKING PROFIT
2. Go with family to superdense planet (most likely) made of diamond
3. ???
4. HUGE FUCKING PROFIT
