What are the real dangers a space faring nation would face?
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28-09-2014, 12:27 AM
RE: What are the real dangers a space faring nation would face?
*waves* Smile

Okay.. traveling from one star system to another?

It depends on how you do it. With sheer, brute force (And 60's technology) we can get a ship up to something like 0.005 the speed of light.

At that speed... there's some 'Time dilation' and a trip to our closest star takes the ship's time something like 40 or 80 years (You effectively double those numbers for the people staying at home and watching) That's almost a human life time just to go 5 light years. However it IS do-able NOW. Big Grin

As mentioned, traveling at such speeds creates its own problems. The 'Hit even a grain of sand and the resulting energy imparted will do bad things'. Heck, even hitting atomic particles (Of which there are a LOT more, floating freely through space) and bad things happen. The faster/closer you can get to the speed of light.... The worse those effects are. Stationary particles in your path effectively become the same as things fired out of giant nuclear accelerators. Doing all sorts of weird atomic interactions with the atoms of your ship.

Of course... one of the solutions to this is simply... build a BIGGER ship! With some of the mass simply being that. Something toi absorb said energy impacts. The other is to build the ship in materials in such away that when they under-go nuclear alchemy they change INTO different and better materials. (Heck, there could be a whole industry of building things to go fast JUST so that what we get when they slow down what they have become is more valuable than when they were launched)

Now... the 'Alucabbra' drive? Pretty sure it has some weird effects when it worse reality around it as well. Something like the crew become effectively blind to space out side their warp bubble and are simply flying by dead reckoning. Also, the space where reality interacts with the warping field.

This doesn't even address finding and interacting with anything else living that we might stumble acorss, should we make it to other, life harboring stars systems.

There's a web site 'Atomic Rockets' that really goes into all this. Smile

Much cheers to all.
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28-09-2014, 12:05 PM (This post was last modified: 28-09-2014 04:28 PM by TheInquisition.)
RE: What are the real dangers a space faring nation would face?
Radiation is going to be very difficult to deal with, the ambient cosmic radiation is enough to do serious damage at the cellular level over an extended period of time.
I've seen calculations that show just traveling from Earth to Mars and back will; assuming 180 day transit to Mars, a 180 day transit back to Earth, and a 500 day stay on the surface, can generate a radiation dose of 1.01 sieverts, this is currently NASA's lifetime dosage limit for their astronauts. So just one round-trip to Mars will end your career as an astronaut, not exactly the stuff of sci-fi legend.

Hopefully there are engineering solutions to this problem, such as magnetic fields around a spaceship, but it still won't stop gamma, hard x-rays and energetic cosmic rays from getting through to the crew.

The idea of a rocket jockey like Han Solo tooling around space without absorbing lethal amounts of radiation could be a fantasy.

Though this does not stop the idea of large-scale colonization to distant worlds, you just don't want to spend too much time outside of the protective Van Allen belts.

I don't want to be a downer to sci-fi dreams, so I'll present this: The cool shots of Han Solo flying through the asteroid belts in The Empire Strikes Back can indeed be replicated. I believe the density of icy, rocky bodies that compose Saturn's rings can rival the kind of density of the asteroid belts seen in Empire Strikes Back, but I sure as hell wouldn't want to take that risk in a fragile spaceship that far from Earth.

Gods derive their power from post-hoc rationalizations. -The Inquisition

Using the supernatural to explain events in your life is a failure of the intellect to comprehend the world around you. -The Inquisition
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28-09-2014, 04:26 PM
RE: What are the real dangers a space faring nation would face?
http://www.treknews.net/2011/07/31/scien...hields-up/

The way i read it a plasma shield (if done right) would be able to take care of ALOT of radiation.
Also since we mentioned Han Solo:
https://www.youtube.com/watch?v=ZFOuxAx-dkc

If we go by what this video says, Space Battles might not be that frequent.
Since they really would be more akin to sixteen or seventeen century naval battles, then the fast paced dog fights we see in Star Wars.
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28-09-2014, 05:00 PM
RE: What are the real dangers a space faring nation would face?
Radiation was mentioned. Its a problem, even at the speeds we're travelling now. And at those speeds, you couldn't do interstellar travel in a lifetime.

If you were to travel near light speed, say 99.9999%, you could travel between the nearest stars in under a decade (Earth years). For you, only months will have passed... But the faster you go, the light in front of you blue shifts, and you would be bombarded by higher energy radiation, almost certainly killing you.
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05-10-2014, 05:31 AM
RE: What are the real dangers a space faring nation would face?
The biggest problem we will have if we learn to travel between stars is the same as it is on Earth: people. Star Trek even shows this sometimes within their supposedly utopian society. We are now, and will always be, our own biggest threat.
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05-10-2014, 09:11 AM
RE: What are the real dangers a space faring nation would face?
Houston we have a problem... We've run out of porn!

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05-10-2014, 12:03 PM
RE: What are the real dangers a space faring nation would face?
(05-10-2014 09:11 AM)Sam Wrote:  Houston we have a problem... We've run out of porn!

Hmmm, mixed crew, microgravity, ... Consider

They could be a net producer of porn, help finance the thing. Drinking Beverage

Skepticism is not a position; it is an approach to claims.
Science is not a subject, but a method.
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05-10-2014, 01:44 PM
RE: What are the real dangers a space faring nation would face?
If run into the Achuultani or the Gbaba we are so fucked.
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05-10-2014, 01:58 PM
RE: What are the real dangers a space faring nation would face?
(05-10-2014 01:44 PM)RogueWarrior Wrote:  If run into the Achuultani or the Gbaba we are so fucked.

Kilrathi, motherfucking spacefaring Tigers.

(31-07-2014 04:37 PM)Luminon Wrote:  America is full of guns, but they're useless, because nobody has the courage to shoot an IRS agent in self-defense
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05-10-2014, 02:29 PM
RE: What are the real dangers a space faring nation would face?
Encountering Kerbals. They're mental.

Hate the belief, love the believer.
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