I would be very excited if there were ever another mission to the moon. Even though it's already happened, it's different when you're around when it actually happens!
First man on Mars will happen in our lifetime.
Now that is going to be incredible.
Hopefully.
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WeaverWho are you?What do you want?Registered Userregular
edited January 2009
oh yeah and Europa is protected from the solar winds by Jupiter's magnetosphere, which actually creates a bow shock similar to what we expect to find at the edge of the solar system.
I remember a girl who was under the impression that the moon had no gravity.
I asked if she let a pencil go what would happen. She insisted it would just float away.
Naturally I inquired as to how the astronaut would not drift off as well.
She gave me the most smug look and said "well, they've got heavy boots"
holy shit
Hot damn. I fear for the future.
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WeaverWho are you?What do you want?Registered Userregular
edited January 2009
Also people feel free to ask questions about anything space related. We'll do our best to answer.
On a side note- Due to the mechanics behind the way our magnetic field deflects the solar winds, there are belts of radiation trapped within our mag field which are a significant consideration when planning manned space travel.
In multibody dynamics, there are certain sets of mathematically possible (but very chaotic) trajectories with low potential energies. That means it's sometimes possible to go huge distances between objects without spending tons of energy, if you know where to go and when to be there.
In the solar system, for example, if you can get to the Earth-Sun L2 point (one of five Earth-Sun Lagrange Points, where all gravitational and centripetal accelerations cancel each other out) you can get to just about anywhere in the solar system without expending much more fuel.
In multibody dynamics, there are certain sets of mathematically possible (but very chaotic) trajectories with low potential energies. That means it's sometimes possible to go huge distances between objects without spending tons of energy, if you know where to go and when to be there.
In the solar system, for example, if you can get to the Earth-Sun L2 point (one of five Earth-Sun Lagrange Points, where all gravitational and centripetal accelerations cancel each other out) you can get to just about anywhere in the solar system without expending much more fuel.
Thank you for that useful answer druhim, that was a really worthwhile post
I'd been told in the past that lagrange points where just where the gravity of two bodies is equal in opposite directions, so there is no net acceleration, but it turns out that is not really what they are
Thank you for that useful answer druhim, that was a really worthwhile post
I'd been told in the past that lagrange points where just where the gravity of two bodies is equal in opposite directions, so there is no net acceleration, but it turns out that is not really what they are
Knowing the little I do about astrophysics I can only assume that the answer is really complex and over the heads of many of us. It was probably best to just say "physics" and move on.
In multibody dynamics, there are certain sets of mathematically possible (but very chaotic) trajectories with low potential energies. That means it's sometimes possible to go huge distances between objects without spending tons of energy, if you know where to go and when to be there.
In the solar system, for example, if you can get to the Earth-Sun L2 point (one of five Earth-Sun Lagrange Points, where all gravitational and centripetal accelerations cancel each other out) you can get to just about anywhere in the solar system without expending much more fuel.
I'd been told in the past that lagrange points where just where the gravity of two bodies is equal in opposite directions, so there is no net acceleration, but it turns out that is not really what they are
No that's pretty close. There's no net acceleration because gravitational and centrifugal forces cancel each other out. For a simple system like a planet and one moon, or a star and one planet, there happen to be five points where that's possible. You can kinda picture how they work in your head without any math.
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DislexicCreepy Uncle Bad TouchYour local playgroundRegistered Userregular
edited January 2009
I keep looking at this thread title, and reading it as "Fighting Massive Gas" and I keep thinking someone in the Israel/Hamas conflict has stepped up the game a bit
In multibody dynamics, there are certain sets of mathematically possible (but very chaotic) trajectories with low potential energies. That means it's sometimes possible to go huge distances between objects without spending tons of energy, if you know where to go and when to be there.
In the solar system, for example, if you can get to the Earth-Sun L2 point (one of five Earth-Sun Lagrange Points, where all gravitational and centripetal accelerations cancel each other out) you can get to just about anywhere in the solar system without expending much more fuel.
Thank you for that useful answer druhim, that was a really worthwhile post
I'd been told in the past that lagrange points where just where the gravity of two bodies is equal in opposite directions, so there is no net acceleration, but it turns out that is not really what they are
well I was hoping you would actually engage your brain instead of just being a little bitch, and think about why there wouldn't be five lagrange points
or look up lagrange points on wikipedia, and educate yourself
instead of being a lazy ass and asking other people to explain it, then probably asking more questions because you didn't understand the answer
What's the funny is tat the guy calling the other guy a little bitch has a little bitch as an avatar
you are high.
you haven't been around until very lately, but this is standard operating procedure for him
earlier he was pretty much just quoting the marquis de sade
I don't think it's all that likely much man made junk will end up in most of the lagrange points since it would seem pretty difficult for the debris to get to L3-L5 on their own
even L1 and L2 seem like they'd be safe from debris in earth orbit because they're both further out than the moon
I don't think it's all that likely much man made junk will end up in most of the lagrange points since it would seem pretty difficult for the debris to get to L3-L5 on their own
even L1 and L2 seem like they'd be safe from debris in earth orbit because they're both further out than the moon
I mean like all the probes and stuff we send to these points that are abandoned. As far as I can tell they will remain in those positions permanently. Either way, as you said, they're really fucking far away for accidental clutter.
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Hopefully.
until the sun burned out
Hot damn. I fear for the future.
On a side note- Due to the mechanics behind the way our magnetic field deflects the solar winds, there are belts of radiation trapped within our mag field which are a significant consideration when planning manned space travel.
why are there five lagrange points?
kpop appreciation station i also like to tweet some
I'd been told in the past that lagrange points where just where the gravity of two bodies is equal in opposite directions, so there is no net acceleration, but it turns out that is not really what they are
kpop appreciation station i also like to tweet some
Basically China will just tell their crew that a return vehicle is on it's way in two or three years.
mars mission
Knowing the little I do about astrophysics I can only assume that the answer is really complex and over the heads of many of us. It was probably best to just say "physics" and move on.
duh
have they never seen gundam?
No that's pretty close. There's no net acceleration because gravitational and centrifugal forces cancel each other out. For a simple system like a planet and one moon, or a star and one planet, there happen to be five points where that's possible. You can kinda picture how they work in your head without any math.
What the hell is a gundam?
That's what I'm sayyyin'
just have like big solar powered catapults parked there and you're set!
I think the point is that we don't need them.
or look up lagrange points on wikipedia, and educate yourself
instead of being a lazy ass and asking other people to explain it, then probably asking more questions because you didn't understand the answer
What's the funny is tat the guy calling the other guy a little bitch has a little bitch as an avatar
earlier he was pretty much just quoting the marquis de sade
Or are they? Genuine question. How large are these points or, I assume, do they vary depending on the planetary bodies.
even L1 and L2 seem like they'd be safe from debris in earth orbit because they're both further out than the moon
they're points, they're dimensionless
but only two of five are stable, the other three can't permanently collect junk
Jupiter's two stable points, for instance, are known to carry big clusters of asteroids
I mean like all the probes and stuff we send to these points that are abandoned. As far as I can tell they will remain in those positions permanently. Either way, as you said, they're really fucking far away for accidental clutter.
And you do your very thing, which is not paying for child support
http://www.ilchildsupport.com/deadbeats/mark_sando.html
nice try
Sad really