Star Trek Shields Now a Possibility? 220
An anonymous reader writes "British scientists have announced their intent to build a Star Trek-style magnetic shielding system to help protect astronauts from radiation. 'There are a variety of risks facing future space explorers, not least of which is the cancer-causing radiation encountered when missions venture beyond the protective magnetic envelope, or magnetosphere, which shields the Earth against these energetic particles. The Earth's magnetosphere deflects many of these particles; others are largely absorbed by the atmosphere.'"
Hmmm... (Score:5, Funny)
(I really should have raised them)
Re:Hmmm... (Score:5, Funny)
Re:Hmmm... (Score:5, Funny)
7. ???
and
8. Profit!
Sorry, but I couldn't resist.
Re:Hmmm... (Score:5, Funny)
"Have poster with screen name similar to character in SciFi show make inane comment based on line from said show".
Mods: look at his handle (Score:5, Funny)
Re:Mods: look at his handle (Score:5, Funny)
No really, I am out of mod points.
Re:Mods: look at his handle (Score:5, Funny)
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Solomon
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In Soviet Federation, Chekov mods YOU!
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Re:Hmmm... (Score:5, Funny)
"Geordi! The shower in my quarters is broken, and I haven't bathed in days."
"No problem, sir. I'll just reconfigure the deflector array to emit B.O. antiprotons, negating the effects emmanating from your pits."
Re:Hmmm...You Forgot... (Score:2)
6. Generate ad impressions
7. Profit!
Member #16309 on the subject of shields... (Score:2)
(*whine, thrash, pout*)"I CAN'T!"
Maybe with this (Score:5, Funny)
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The moon is protected by the Earth's magnetosphere. It is in orbit after all.
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The Earth's magnetopause is at about 15 Earth radii on the sun-side. The Van Allen radiation belts are below 10 Earth radii. The moon orbits at about 60 Earth radii.
http://en.wikipedia.org/wiki/Magnetosphere [wikipedia.org]
http://en.wikipedia.org/wiki/Moon#Orbit_and_relati onship_to_Earth [wikipedia.org]
http://en.wikipedia.org/wiki/Van_Allen_radiation_b elt [wikipedia.org]
Most terrestrial bodies in the solar system have very weak magnetic fields, much weaker than that of Earth. The moon has none to speak of, because
Alas (Score:5, Funny)
Thats OK. (Score:5, Funny)
It's never so simple... (Score:2)
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Down-to-earth uses (Score:2, Funny)
Movies lead again! (Score:3, Funny)
cough (Score:3, Insightful)
No. Once again, science fiction writers far predating TV shows and movies such as EE "Doc" Smith and his many predecessors, peers and those that followed led the way, and TV lamely followed. But that's OK. You go back to watching TV. Books might make your head hurt. Full of words, they are. Very annoying. And that whole "theater of the mind" thing... I mean, what if you blow a projector bulb in your cerebrum?
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Misleading Title (Score:5, Insightful)
Course, it wouldn't be long before Jack-Ass had shields around someone's nether regions, and shot it with a gun.
Re:Misleading Title (Score:5, Informative)
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Not so misleading as you might think (with video!) (Score:3, Interesting)
Not correct: it will not work for neutral radiation (neutron and gamma) but will deflect charged particle radiation just fine.
And doesn't technically deflect anything away, but instead traps stuff. causing the particles to precipitate at specific locations (which can be more heavily shielded) at the poles.
It is a real shame that nobody thought to tell us physicists about this because we have been using magnetic fields
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Fine, but dont call them 'Star Trek' shields (Score:5, Funny)
I hope we have cleared that up, dammit.
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Deflector dish, dammit (Score:2)
So does that mean.... (Score:3, Interesting)
Or....did we fake the moon stuff?
"Denny CRANE"
Re:So does that mean.... (Score:5, Interesting)
Galactic cosmic rays [wikipedia.org] are the biggest, most difficult problem. For a variety of reasons, explained in the WP link, they're not a big problem for low-earth orbit space stations like the ISS. The Apollo astronauts did get exposed to a lot of radiation, but they were only out for about a week, whereas an elliptical transfer orbit to Mars takes 1.4 years round trip in interplanetary space. For anyone who's actually had to wear a radiation badge to work, the integrated dosages they've estimated for a Mars issue just sound nuts, like somebody moved a decimal place over three places by mistake. It's a huge amount of radiation, roughly on the right order of magnitude to kill a human being. The Apollo astronauts got dosages at the level where there's speculation they may be getting cataracts at a significantly higher rate than normal. Scale that up by a ratio of 1.4 years to 1 week, and you get effects that are just not on the order of magnitude that you could laugh off heroically.
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And that's just one of many knowns and quite a few unknowns. Your whole body will be quite fucked up by all the zero/low-G. Anything goes wrong, you might end up as everything from a tin can in space to a smear on Mars' surface to the first permanent resident on Mars. Even on the most deserted arctic outpost you don't get crammed up in so little space for a so
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Remember that our only options for power generation right now are solar arrays and RTG's, and you're not going to get much mor
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dupe from 2004; lots of practical problems (Score:5, Interesting)
Dont you have cable? (Score:5, Funny)
No, no, no, dude.
You only need bio-gel packs and iso-linear chips. But, only the green ones.
If you use the red ones and get them mixed up, you'll need Data to save your ass.
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Ok, so I can't.
You only need bio-gel packs and iso-linear chips. But, only the green ones.
Neither of these two things would have anything to do with a forcefield, except maybe being responsible for turning it on and off.
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Bees!!! (Score:5, Funny)
Won't anyone think of the bees?
there are practical power limitations (Score:3, Informative)
the power consumption of the machine used is about the same as dayton ohio.
good luck mounting that generator on your back.
additionally, equating them to star trek shields is a bit of a stretch. it will block the same type of radiation the magnetosphere blocks, in other words, good luck deflecting lasers or solid matter. I get the feeling in order to do that you would have to make a shield with orders of magnitude more magnetic power, then for objects with mass engineer gravitic shielding a-la babylon 5.
in other words, star trek style shields are, very optimistically, at least 250 years away, and more realistically 700 to 1000 years away, assuming we last that long as a species.
Re:there are practical power limitations (Score:5, Insightful)
there is a lab in the southwest (nevada i think) where they generate fields as strong as the earth's magnetic field (in otherwords, what theyre looking for here).
The Earth's magnetic field is wimpy. A refrigerator magnet produces a stronger field. The thing about Earth's field is that it is HUGE, spatially. So particles have a LOT of field to contend with on their way through the magnetosphere. Even though the field itself is incredibly weak.Re: (Score:2)
Fluid Dynamos (which is what the earth uses for it's field) seem like a good candidate. [aps.org]
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Would be interesting to see a combination effort to create a Magnetohydrodynamics Generator to generate both electricity and a magnetic field. Power the ship and protect it from basic radiation and small particles at the same time.
oh noes, your hard-drives got pwnz0red (Score:5, Funny)
Mr. Spock: Captain, may I remind you that these new shields developed by British scientists rely on Magnetic fields and as a result...
Captain Kirk: Not now Spock!
Chekov: Shields up, Captain!
Lights flicker, ship powers down. Emergency lights light up**
Captain Kirk: Spock! What happened?
Mr. Spock: It appears that the magnetic shields have erased our hard-drives. Our ship is powerless.
Captain Kirk: KHAAAAAAAAAAAAAAAAAAAAN!!!!!!!!!!!!
Disclaimer: I have no idea if magnetic shields would really erase hard-drives, but oh well!
Ya right... (Score:2)
Hmm, what would be the energy requirements to create a "magnet bottle" to a distance of 20-30 kilometers? They got the idea for the shield from fusion reactor tech, but I'm guessing one would need a Warp Core to power this thing... Oh ya, and not have every pie
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Well, since the energy density of a magnetic field is (B^2)/(2*u0) (as given here [wolfram.com]), filling a sphere of radius 30km with 1 gauss (roughly the strength of the earth's field) would require 450 gigajoules [google.com]. Of course, that's a really rough guess, and probably low, since the field would be a stronger as you get nearer the ship.
If you happen to have a time machine (which might look suspiciously like a DeLo
How Long Will It Take? (Score:4, Funny)
Manager: How long until we can get the shields operating?
Engineer: Eight Years
Manager: Eight Years?
Engineer: Yes, but you don't have eight years, so I'll do it in two.
Manager: Do you always multiply your design estimates by a factor of four?
Engineer: I have a reputation to maintain, sir.
Fry says (Score:2)
"Shields at maximum Yarnell [wikipedia.org]!"
sounds fine, except (Score:2)
Ohmygodponies style reporting (Score:5, Insightful)
FFS (Score:2)
No, some scientists have said they intend to build one. I intend to do a lot of things, it doesn't mean they get done.
Gonna protect me from what...? (Score:2)
Bar magnet (Score:2)
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Re:Cool! (Score:5, Funny)
(Though admittedly in either case the boobs in question aren't real, but hey.)
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Seven of Nine -> Search Google for "Tribble Porn"
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MY EYES! The goggles, they do nothing!
Re:Cool! (Score:4, Funny)
>
> MY EYES! The goggles, they do nothing!
MY EYES! The Google, it does everything!
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I could see it selling to the furry market...
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Duh (Score:2)
I'd have a holodeck with a seven of nine program. For when I got tired of T'Pol. Jeez.
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Oddly enough that's true in the porn industry as well.
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Real is spectacular. These silicone-stuffed ladies are operating under entirely false pretenses. if silicone is what you like, buy a RealDoll. Guaranteed less expensive than the real thing over time, and those breasts are just what you want.
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But no, these shields are hardly in the same league as your average sci-fi story shields.
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Re:Not quite. . . (Score:5, Informative)
It won't stop electromagnetic radiation, but that's not the only kind of radiation. Alpha and beta particles both count as radiation, and they can both be deflected magnetically.
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It's gamma radiation you want to watch for... and unless I'm reading it wrong this won't stop that.
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Shield frequency modulation (Score:2)
Or some such nonsense.
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Anyway, unless Star Trek shields were modulated at a frequency in the tiny fractions of a Hz. they weren't magnetic. Generating enough electromagnetism to deflect high-energy particles is
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Re:Shield frequency modulation (Score:5, Funny)
or the fact you know the exact episode this happened
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...sorry
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I'm also hoping to get my anti-aging device working, but it can wait. I don't think I've got the time machine working, or if I will I'll have forgotten to tell me that I did...
Prepetual motion (Score:2)
Just spin up a pendulum in vacuum. It just keeps going and going and going... wicked! Now you can move on to more challenging pursuits like a closed system energy generator.
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Radiation, on the other hand, generally isn't so easy to block. You can most
Wake me up when we have replicators (Score:2)
A Guinness. Pfftssshshzzzz.
Can replicators only make food? Still, not bad...
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I have the feeling that Darth Vader would be getting a few more cybernetic implants.
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Presumably there would be a shield to protect the ship also. Big bubble, little bubble. How to get plasma between them is up to the reader
I am lost trying to imagine it. Can you make a nice round magnetic field to surround a ship. I thought magnetic fields like a kinda bone-shape seemingly leaving the middle fairly exposed.
How one makes a huge magnetic charged field and keep the ship/components from being affected is beyond me too
Oh well, i plan to build a
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I'm a fan of Nikola Tesla; he was pretty much my childhood hero. I think he was a really sharp guy that developed a lot of useful technology. However, I think some of the things he thought were possible probably aren't - especially stuff he was talking about later in his life. Everybody goes over the hill at some point, and even if you're still really bright at the end of your life, you still don't know everything and are bound to make some speculations that are totally unfeasible.
I think it's unfortun
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On the other hand, the guy fucking invented electrical engineering. He invented the AC motor and the radio, among other things. He also invented robotics, but it was so ahead of its time that nobody gave a shit.
Oh, sure, he probably didn't have a superweapon. But he really did think of the kinds of things nobody else would have thought of. If he ha