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No Warp

lcarsdata

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POSTS: 169

Report this Nov. 20 2004, 2:40 pm

Would it be possible to get to our closest star system Alpha Centauri in less than 10 years without using warp speed. It seems possible if you used lots of Anti-Matter to propell your self at almost half the speed of light.

While I am here a quick question :question: what is the speed of light to the closest nano-second?

Another quick question  :question: what star system/constellation is our solar system (the sol system) in?

ETX125

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POSTS: 18

Report this Nov. 21 2004, 2:54 am

Theoretically it would be possible propell your self at about 1/2 the speed of light...but the G forces created would instantly kill you as soon as you started to accelerate, so you'd need inertial dampeners to do it safely.

in answer to your other 2 questions:

1. the speed of light is 300 000 000 metres per second, you could work our how far you would go in 1 nanosecond, but you might as well stick with SI units.

2. our star is not in any constellation, the constellations are images 'created' by other stars in our galaxy, they are purely random scatterings that happen to look some what like hunters or bears or dogs...

lcarsdata

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POSTS: 169

Report this Nov. 21 2004, 6:00 am

1. If you were to propell yourself at half the speed of light at slow increases would that kill you because of G-forces. Because on Star Trek they just jump straight to warp no speed increases or anything.

2. What are Sl units

3. Then how did they think up the name Alpha Centauri. You don't have an animal named an alpha or a centauri.

lionhead

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POSTS: 53

Report this Nov. 21 2004, 12:19 pm

Quote (Roberto1221 @ Nov. 20 2004, 8:40 pm)
Would it be possible to get to our closest star system Alpha Centauri in less than 10 years without using warp speed. It seems possible if you used lots of Anti-Matter to propell your self at almost half the speed of light.

While I am here a quick question :question: what is the speed of light to the closest nano-second?

Another quick question  :question: what star system/constellation is our solar system (the sol system) in?


With 1/2 speed ofl ight you would reach alpha Centauri in about 8.5 years. so yes. But alpha centauri is not a star system(not really.) it actually a solar sytems with more than 1 star.....That sound very strange i know but an actual star system is Like Andromeda, with Billion of stars.


I thought the speed of light was about 300000 Km/sec. Thats what i know.


Our starsystem is called 'The Milky Way'. Maybe you have heard of it.

ETX125

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POSTS: 18

Report this Nov. 21 2004, 3:02 pm

Robberto-

1. on star trek they have inertial dampeners that stop them getting killed...

2.SI units are the globally accepted units of measurement, eg, the metre, the kilogram, the degree kelvin etc... SI stands for Sysetm internationale...

3. alpha denotes the fact that the star is the brightest in the constellation, there is a mythical creature the Centaur, half bull half man... basically the other way round from a minotaur i.e top half man, bottom bull...

Lionhead- they are the same thing, 300 000 000 m/s is the same as 300 000 km/s

JordanMcKell

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POSTS: 2

Report this Nov. 21 2004, 5:56 pm

Lionhead,

The Milky Way is our galaxy, not our star system.

'Star system' is another name for a solar system.

lionhead

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POSTS: 53

Report this Nov. 21 2004, 7:31 pm

Quote (JordanMcKell @ Nov. 21 2004, 11:56 pm)
Lionhead,

The Milky Way is our galaxy, not our star system.

'Star system' is another name for a solar system.

Solar system is a Solar system, Star System is A star System. From what i know of english(and i'm not) StarSystem means Galaxy..... Still do. Come too tihnk of it, STAR means 1, so i'm guessing oyu are right, but where the hell did i pick that up? Don't they always say Star System? Isn't Andromeda A 'Star System'?

Toresica

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POSTS: 3

Report this Nov. 21 2004, 9:54 pm

The speed of light isn't exactly 30000000 m/s, although that's close enough most of the time.

My physics textbook gives 2.99792458 x 10^8 m/s.  That isn't to the closest nanosecond (a nanosecond is 10^-9 seconds), but it's slightly more precise.


Alpha centauri is actually three stars, which might be where you got the impression that a star system is different then a solar system.

Xelopheris

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POSTS: 445

Report this Nov. 21 2004, 11:20 pm

If you accelerated to a velocity of 2^-2 * c (The most efficient speed when taking into account relavistic effects), and with an acceleration of 10 G's (Which is pushing it), it would take about 8 years for a one way trip.


That's not taking into account all the extra mass for food, air, etc., nore the weight of the ship and fuel itself.

lanceromega

GROUP: Members

POSTS: 3859

Report this Nov. 22 2004, 2:36 am

Quote (ETX125 @ Nov. 20 2004, 11:54 pm)
Theoretically it would be possible propell your self at about 1/2 the speed of light...but the G forces created would instantly kill you as soon as you started to accelerate, so you'd need inertial dampeners to do it safely.

in answer to your other 2 questions:

1. the speed of light is 300 000 000 metres per second, you could work our how far you would go in 1 nanosecond, but you might as well stick with SI units.

2. our star is not in any constellation, the constellations are images 'created' by other stars in our galaxy, they are purely random scatterings that happen to look some what like hunters or bears or dogs...

The G force will not kill you!!!!.

G force is caused by acceleration, if you were to accelerate a ship up to relativitic velocities you would do it by applying a constant velocity.

For example if you can apply a constant thrust of 1 G that would mimic the earth gravity after 2 year you would be traveling at around 98 PSL.

A trip to the alpha centaur would require 5 year, half of it acceleration and the the other half deacceleration and the around 3 year would have according to the clock on the ship ship. Longer voyager can be taken using this method and you can even tranverse the universe with 28 year of ship time.

So hi g's are not a factor unless you want to accelerate faster than one gee.

AquamonkeyEG

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POSTS: 4915

Report this Nov. 22 2004, 3:31 am

andromeda is a galaxy. there are star clusters composed of several stars. there are galaxy clusters composed of several galaxies.

a star system is the same as a solar system. there are binary systems with 2 stars or trinary systems with 3 stars that all ocupy the same solar system. i think 3 is the most we've observed so far

lanceromega

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POSTS: 3859

Report this Nov. 22 2004, 6:26 am

Quote (Xelopheris @ Nov. 21 2004, 8:20 pm)
If you accelerated to a velocity of 2^-2 * c (The most efficient speed when taking into account relavistic effects), and with an acceleration of 10 G's (Which is pushing it), it would take about 8 years for a one way trip.


That's not taking into account all the extra mass for food, air, etc., nore the weight of the ship and fuel itself.

not really at 1 G constant acceleration you could travel the following and obtain the following speed and time dilation:

Tship tearth d v gamma;
1 year 1.19 yrs 0.56 lyrs 0.77c 1.58
2 3.75 2.90 0.97 3.99
5 83.7 82.7 0.99993 86.2
8 1,840 1,839 0.9999998 1,895
12 113,243 113,242 0.99999999996 116,641

lcarsdata

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POSTS: 169

Report this Nov. 23 2004, 10:21 am

Quote (Xelopheris @ Nov. 22 2004, 4:20 am)
If you accelerated to a velocity of 2^-2 * c (The most efficient speed when taking into account relavistic effects), and with an acceleration of 10 G's (Which is pushing it), it would take about 8 years for a one way trip.


That's not taking into account all the extra mass for food, air, etc., nore the weight of the ship and fuel itself.

In space there is no gravity and hardly any friction (except for space dust) so carrying extra items (food etc.) would not require that much more force if th eonly thing slowing you down is a bit of space dust.

I though you only got really high G's when you acclerated really fast really quickly and slowed really fast really quickly.

Also since reading a book, I realised that traveling at half the speed of light the ship might get effected by time and time would slow down inside it, but not outside it. This was shown slightly in the Appolo missions when they had a really acurate clock on Earth and on the craft it lost a few seconds. Which means we might lose hours if not days or weeks.

Xelopheris

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POSTS: 445

Report this Nov. 23 2004, 12:20 pm

Roberto:

Don't forget that Force = Mass * Acceleration. If you expand the mass by 1000 times, you need 1000 times more force for the same acceleration. And gravity is irrelevent when calculating mass, so don't even try it.

AquamonkeyEG

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POSTS: 4915

Report this Nov. 23 2004, 2:11 pm

1G in the F=ma would just be 9.8 m/s^2. then you multiply by whatever mass your ship is carrying including fuel. that is the thrust required. depending on the type of propulsion system and the rate of consumption of fuel that is expended to provide the thrust, you will need to adjust the thrust to compensate for the mass flux leaving the ship.

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