Why Interstellar Travel is Physically Impossible.

[Carl in Michigan]

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

Good grief. What else did you learn from Star Wars
Yeah I don't have the mental capacity to deal with the arguments of those who believe SCIENCE FICTION is science


Travel Times at Different Speeds
Walking (3 mph / 5 km/h): Approximately 324 billion years.
Driving a Car (60 mph / 96 km/h): Approximately 16.8 billion years.
Commercial Jet (600 mph / 965 km/h): Approximately 1.5 billion years.
Voyager 1 Spacecraft (38,000 mph / 61,000 km/h): Approximately 25.5 million years.
Parker Solar Probe (fastest man-made object, ~430,000 mph): Approximately 2.3 million years.
10% the Speed of Light (theoretical future tech): 15,000 years.
Speed of Light (
): 1,500 years (Earth perspective) or instantaneous (traveler perspective due to time dilation).

 

[Carl in Michigan]

galt we dont know what kind of things science will open up for us a hundreyears from now...

We KNOW they WONT violate established law

 

[Carl in Michigan]

These arguments ALWAYS devolve into science fiction brainwashing. And always from the people who think they're too founded in "Science" to accept a Creator

Listen to a REAL scientist for once and not a Star Trek writer

 

[ShahdagMountains]

Walking on liquid water is impossible

 

[Carl in Michigan]

View attachment 1242424

I see flying, not walking.
Skiing uses the same principle as an airplane wing

 

[Harry Dresden]

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

i bet you cant prove he doesnt exist...and if he is real, why would his existence violate the physical laws that govern the universe that he created?...

 

[iamwhatiseem]

Good grief. What else did you learn from Star Wars
Yeah I don't have the mental capacity to deal with the arguments of those who believe SCIENCE FICTION is science


Travel Times at Different Speeds
Walking (3 mph / 5 km/h): Approximately 324 billion years.
Driving a Car (60 mph / 96 km/h): Approximately 16.8 billion years.
Commercial Jet (600 mph / 965 km/h): Approximately 1.5 billion years.
Voyager 1 Spacecraft (38,000 mph / 61,000 km/h): Approximately 25.5 million years.
Parker Solar Probe (fastest man-made object, ~430,000 mph): Approximately 2.3 million years.
10% the Speed of Light (theoretical future tech): 15,000 years.
Speed of Light (
): 1,500 years (Earth perspective) or instantaneous (traveler perspective due to time dilation).

LOL
Then you didn't read what I posted. I was literally saying that math/physics get in the way of "magical" space travel.
The opposite of science fiction.

 

[Harry Dresden]

We KNOW they WONT violate established law

how the hell do you know what will happen centuries from now?..

 

[Carl in Michigan]

LOL
Then you didn't read what I posted. I was literally saying that math/physics get in the way of "magical" space travel.
The opposite of science fiction.

Yeah it does, but you believe in magic. You're insist on believing the sci-fi workarounds I've real science.

I'll be moving you to ignore now since you believe you're too intelligent for us ants. Bye

 

[Carl in Michigan]

how the hell do you know what will happen centuries from now?..

Because I'm grounded in real Science,

 

[Carl in Michigan]

i bet you cant prove he doesnt exist...and if he is real, why would his existence violate the physical laws that govern the universe that he created?...

Because He exists OUTSIDE this universe He creat for us

God isn't a slave to His own creation

Do the residents of your video game dictate the rules that govern their world?

 

[Harry Dresden]

Because I'm grounded in real Science,

you are grounded in what is known today....and like i said...pretty closed minded too...

 

[Harry Dresden]

Because He exists OUTSIDE this universe He creat for us

God isn't a slave to His own creation

Do the residents of your video game dictate the rules that govern their world?

i dont play video games carl....but apparently you do....

 

[ShahdagMountains]

 

[Churchill]

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

This is a metaphysical question not a scientific one.

I studied general relativity many years ago, reading Einstein (not just pop science) is something I recommend even if mathematics troubles people.

During those studies I realized what is often not obvious, theories always make assumptions, like the universe is governed by laws and the laws are isotriopic and Homogeneous and so on. These assumptions are not conseqences of some theory the are axioms used to construct theories.

So science can never explain the presence of the universe, because every theory has to presuppose that laws and material already exist.

Therefore the explanation for the universe and laws being here cannot be a scientific one, it has to be a different kind of explanation altogether.

So don't refer to that as God if you don't like that idea, but you do need to devise something that explains the presence of a universe along with its laws and mathematical intelligibility that does not simply presuppose the existence of laws and mathematical intelligibility - because that doesn't explain anything.

 

[Fort Fun Indiana]

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).

True. But the problems here are prohibitive.

First, getting to just half the speed of light. This alone would take much longer than the rest of the trip. If the acceleration is limited to levels that DON'T kill human beings, this acceleration period would last a very long time. In fact -- and I will check the math -- you would arrive at the destination before even reaching half the speed of light.

Second, if moving at such a speed, a collision with a speck of dust would turn the entire mission into a cloud of pink mist.

Then, you would have to slow down before arriving. That would require just as much time and energy as was required to accelerate to half the speed of light.

So, you would spend the entirefirst half the travel time accelerating and then spend the entire second half of the travel time decelerating. And you would never come close to half the speed of light. Not if you want human beings to survive the trip.

And even at higher acceleration for unmanned missions, the time and energy limits still apply.

 

[Carl in Michigan]

Reaching the nearest star, REALISTICALLY:

Assume the “nearest star” is Proxima Centauri, about 4.24 light-years away.
You accelerate at 1 g, flip halfway, then decelerate at 1 g — the classic relativistic rocket scenario.

### Key idea

Because you’re accelerating continuously, relativity matters. You approach (but never reach) light speed, and time on the ship runs slower than time on Earth.

We split the trip into two halves:

• accelerate for the first 2.12 light-years
• flip
• decelerate for the remaining 2.12 light-years

### Result (rounded)

• ⏱ Time experienced on the spaceship: about 3.6 years
• Time that passes on Earth: about 5.8–6 years
• Maximum speed reached: about 0.95 c (95% of light speed)

### What this means

• From your perspective, you leave and arrive in under 4 years.
• People on Earth see you take almost 6 years.
• You never actually hit light speed — relativity prevents that — but you get very close.

### Intuition

Continuous 1 g acceleration feels like normal Earth gravity the whole trip:

• You could walk around normally
• No weightlessness
• Flip the ship halfway and the “floor” becomes the deceleration direction

### Quick summary

• Distance: 4.24 light-years
• Acceleration: 1 g both ways
• Ship time: ~3.6 years
• Earth time: ~5.8–6 years

Pretty wild: you could go to another star within one human career of subjective time.

Want me to:

• calculate a round trip?
• try 10 light-years?
• or show how long it takes to reach 99% of light speed?

 

[ShahdagMountains]

Do you need fuel for all this acceleration-DE acceleration? Or does the planet in question pull you in with its gravity?

 

[Godboy]

Interia doesn't generate artificial gravity.

From Google AI...

Yes, inertia creates artificial gravity through acceleration or rotation. By forcing an object to move in a circle (centripetal force), an occupant's inertia causes them to push against the outer wall, creating a "centrifugal force" that simulates the downward pull of gravity.

 

[WorldWatcher]

Reaching the nearest star, REALISTICALLY:

Assume the “nearest star” is Proxima Centauri, about 4.24 light-years away.
You accelerate at 1 g, flip halfway, then decelerate at 1 g — the classic relativistic rocket scenario.

### Key idea

Because you’re accelerating continuously, relativity matters. You approach (but never reach) light speed, and time on the ship runs slower than time on Earth.

We split the trip into two halves:

• accelerate for the first 2.12 light-years
• flip
• decelerate for the remaining 2.12 light-years

### Result (rounded)

• ⏱ Time experienced on the spaceship: about 3.6 years
• Time that passes on Earth: about 5.8–6 years
• Maximum speed reached: about 0.95 c (95% of light speed)

### What this means

• From your perspective, you leave and arrive in under 4 years.
• People on Earth see you take almost 6 years.
• You never actually hit light speed — relativity prevents that — but you get very close.

### Intuition

Continuous 1 g acceleration feels like normal Earth gravity the whole trip:

• You could walk around normally
• No weightlessness
• Flip the ship halfway and the “floor” becomes the deceleration direction

### Quick summary

• Distance: 4.24 light-years
• Acceleration: 1 g both ways
• Ship time: ~3.6 years
• Earth time: ~5.8–6 years

Pretty wild: you could go to another star within one human career of subjective time.

Want me to:

• calculate a round trip?
• try 10 light-years?
• or show how long it takes to reach 99% of light speed?

What type of propulsion system are you using to generate 1G of acceleration for the expected mass of a ship that could function as an enclosed ecosystem for that long?

WW