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.