Why Interstellar Travel is Physically Impossible.

[Godboy]

Nuclear reactors can't even begin to create enough energy to propel a ship light years away. Nuclear is energy dense, but it does not create the kind of energy needed for propulsion.

Ive been talking about a scenario involving a 1,000-2,000 year long trip, however, if you were able to get to half the speed of light, it would only take 9 years to get to the nearest solar system (Proxima Centauri). I am just assuming we are using slower speeds and im accounting for the need of a habitable "goldilocks" planet, which will be rare and likely extremely far away from us.

 

[Godboy]

Not really....
Time displacement is a strange phenomenon. As a craft reaches significant portions of the speed of light after accelerating for more than a year to reach 1G gravity (amount of energy needed is enormous)....the time dilation effect begins.
Where here on Earth time moves normally....on the spacecraft time moves very slowly. As it leaves the solar system this becomes even more pronounced. Think of time moving forward like a honey dipper in a jar of honey spinning the honey.

So....descendants aren't really needed.

But whatever time the spacecraft needed to accelerate it will need the same amount to decelerate. (Navigation is going to be insanely difficult)

The important part is that everyone here on earth will be dead long before the spacecraft returns and can tell us anything. America is 250 years old....and 250 years is nothing for spacecraft travel.

Yeah, i briefly covered that stuff ^ in an earlier post... Why Interstellar Travel is Physically Impossible.

 

[JohnDB]

Yeah, i briefly covered that stuff ^ in an earlier post... Why Interstellar Travel is Physically Impossible.

Bears repeating....

But be happy....someone agrees with you!

 

[Godboy]

Bears repeating....

But be happy....someone agrees with you!

Im always happy when people agree with me. Everyone should always do that.

 

[Carl in Michigan]

I believe it is related to the conceptual process of “warp” drive.

warp drive theory involves BENDING THE UNIVERSE to make your destination closer.
Explain how human beings will ever do that

 

[Carl in Michigan]

We absolutely do NOT understand the laws of the Universe. We have no idea if its an open or closed universe. We also dont understand why the universe is expanding, how fast its expanding, if its expanding equally across the outer edge of the universe, or if its exanding at different speeds in different areas.

We can also only see things in 3 dimensions, but there are tons of things taking place in other dimensions that we dont see or understand.

So youre looking to magic to travel to the stars.

 

[Carl in Michigan]

and one day they might find out a way to get around the physical laws...

a poster who doesnt believe in God or miracles looks for miracles to bypass the physical laws that govern our universe

 

[ShahdagMountains]

Arthur C. Clarke in his bookThe Fountains of Paradise proposed a "space elevator": a high-strength wire would connect the Earth's surface with a satellite at geostationary altitude 36,000 km above the equator, allowing a high-speed elevator to run up and down the wire, eliminating the need for wasteful rocketry. (This idea may not be as outlandish (no pun intended!) as it sounds. Its weakest point may be that the space elevator could become an attractive target for terrorist groups.)

The Exploration of Space - Arthur C. Clarke

The space elevator idea was used in the movie AD Astra.

 

[BackAgain]

warp drive theory involves BENDING THE UNIVERSE to make your destination closer.
Explain how human beings will ever do that

Yeah, because I already said I’m no physicist.

 

[MisterBeale]

Aliens are not coming to visit.

Unless time and space are illusions?

 

[Harry Dresden]

a poster who doesnt believe in God or miracles looks for miracles to bypass the physical laws that govern our universe

carl how did god make everything?...what laws of physics did he use to do all this?..

 

[gipper]

Im always happy when people agree with me. Everyone should always do that.

Only fools agree with Satan.

 

[iamwhatiseem]

So youre looking to magic to travel to the stars.

It's not magic.
Quantum Physics will blow your brain right out of your head if you have the capacity to gain a grasp of it.
Same is true for a black hole. A place where the impossible is right there. Yet, it is impossible. Yet, it is right there. The sheer number of mind bending characteristics of a black hole will shake anyone's reality.

 

[Carl in Michigan]

carl how did god make everything?...what laws of physics did he use to do all this?..

God doesn't exist. His existence violates the physical laws that govern this universe
Turning water into wine violates the laws of the universe.
Walking on liquid water is impossible because it violates the known laws governing the universe
Only a primitive people need gods

 

[Carl in Michigan]

Yet, it is right there. The sheer number of mind bending characteristics of a black hole will shake anyone's reality

All that happens in a black hole is EVERYTHING GOES TO DIE
The rest you'd like to believe is pure science fiction

Your condescending attitude didn't go over my simple mind

 

[iamwhatiseem]

All the hat happens in a black hole is EVERYTHING GOES TO DIE
The rest you'd like to believe is pure science fiction

Like I said, only if yuo have the brain capacity to understand.
And clearly - you don't. Sorry for that.

 

[WorldWatcher]

You can make artificial gravity through inertia, which would solve that issue. Im sure that youve seen those future ship designs with a giant spinning wheel.

Interia doesn't generate artificial gravity. There are only two methods, currently which simulate artificial gravity:

Interia is the tendency of a body to continue in it's current state (at rest or movement) unless the state is changed by some force. Current rocket systems generate inertia - which allows the rocket to travel in space - but using high thrust short duration acceleration. Once the acceleration stops, there are no longer "G" forces.

First, acceleration. For acceleration to provide constant gravity for a trip through space, the acceleration profile would have to change from "high thrust/costing" to constant acceleration under power for the duration of the trip. As a side note a constant acceleration equal to 1 "G" would reduce the travel time from Earth to Mars from 6-9 months to less than 2 days. The down side is the ship would be traveling at over 1,000,000 kilometers/second and wouldn't be able to stop. Even with a mid-courese "flip" and decelerating (which would again produced 1 "G" for the occupants, the travel time would be less than a week.

Second, is generation of "rotational gravity" through centrifugal force. The problem is the diameter of the rotating "circle" has to be large enough to minimize coriolis effects and the mechanical systems invovled have to be EXTREAMLY mechanically sound to (a) rotate properly, (b) withstand the stress of acceleration and deceleration. Current rocket technology does not allow for the lifting of such a ship to space. It would have to be constructed in orbit, then set into it's rotation. Such a ship would be massive and would not reduce travel time when compared to the constant acceleration model.

WW

 

[WorldWatcher]

What about stuff like wormholes or stargates

[OFF TOPIC]

Just being a nerd here...

But a Stargate is a wormhole.

WW

[/OFF TOPIC]

 

[iamwhatiseem]

[OFF TOPIC]

Just being a nerd here...

But a Stargate is a wormhole.

WW

[/OFF TOPIC]

Worm holes are barely theoretical. Really only a "lazy out" in trying to make a math theory work.
A stable worm hole is a whole other level of impossible.

 

[WorldWatcher]

Worm holes are barely theoretical. Really only a "lazy out" in trying to make a math theory work.
A stable worm hole is a whole other level of impossible.

WW <<----