Free Republic
Browse · Search
General/Chat
Topics · Post Article

Skip to comments.

The Physics That Makes Interstellar Travel IMPOSSIBLE
YouTube ^ | February 6, 2026 | Richard Feynman

Posted on 02/19/2026 1:56:56 PM PST by rexthecat

Richard Feynman’s physics reveals why aliens cannot reach Earth. From the absolute limit of the Speed of Light to the Fermi Paradox, discover why Interstellar Travel is impossible and why we are truly alone in the universe. …

(Excerpt) Read more at youtube.com ...


TOPICS: Astronomy; Science
KEYWORDS: ai; bigfoot; fakevideos; ifhfakescience; interstellartravel; nonsense; relativity; richardfeynman; superluminal; youtube
Message from Jim Robinson:

Dear FRiends,

We need your continuing support to keep FR funded. Your donations are our sole source of funding. No sugar daddies, no advertisers, no paid memberships, no commercial sales, no gimmicks, no tax subsidies. No spam, no pop-ups, no ad trackers.

If you enjoy using FR and agree it's a worthwhile endeavor, please consider making a contribution today:

Click here: to donate by Credit Card

Or here: to donate by PayPal

Or by mail to: Free Republic, LLC - PO Box 9771 - Fresno, CA 93794

Thank you very much and God bless you,

Jim


Navigation: use the links below to view more comments.
first previous 1-2021-4041-6061-80 ... 221-225 next last
To: SkyDancer
I guess we need some ship that can reach warp factor nine then.


41 posted on 02/19/2026 2:28:12 PM PST by P.O.E.
[ Post Reply | Private Reply | To 2 | View Replies]

To: Jan_Sobieski

Stop lying.


42 posted on 02/19/2026 2:28:30 PM PST by NorthMountain (... the right of the people to keep and bear arms shall not be infringed)
[ Post Reply | Private Reply | To 25 | View Replies]

To: rexthecat

not a bad facsimile. and the science is good, except for the darwin bs, not bad at all. even the voice is pretty good.

gosh. i miss that man. one of my childhood heros along with Von Neumann; got me looking into science and engineering. if you want to understand real science—how it works; how it’s done; how it advances through gifted individuals—understand that man’s accomplishments. tough i know, but worth it.


43 posted on 02/19/2026 2:29:01 PM PST by dadfly
[ Post Reply | Private Reply | To 1 | View Replies]

To: citizen

I hope everyone knows that this is AI Feynman and not necessarily his actual opinion.

“In a billions-year old universe, there may be, or have been/will be, beings smarter than Richard Feynman.”

Yes, but not many.


44 posted on 02/19/2026 2:29:21 PM PST by beef (The pendulum will not swing back. It will snap back. Hard.)
[ Post Reply | Private Reply | To 10 | View Replies]

To: Alberta's Child
"The nearest star system to ours — Alpha Centauri — is 4.3 light-years away. That sounds like a manageable number until you realize that a spacecraft traveling at a speed of one million miles per hour would take 25 million years to reach it."

******************************************************************

I calculate 2,879 years to get there at 1,000,000 mph. Still more time than I have to spare.

Speed of light is 186,000 miles per second.

45 posted on 02/19/2026 2:31:10 PM PST by Neanderthal (The steal was real!)
[ Post Reply | Private Reply | To 7 | View Replies]

To: SkyDancer

The principle of generating small amounts of finite improbability by simply hooking the logic circuits of a Bambleweeny 57 Sub-Meson Brain to an atomic vector plotter suspended in a strong Brownian Motion producer (say a nice hot cup of tea) were well understood. It is said, by the Guide, that such generators were often used to break the ice at parties by making all the molecules in the hostess’s undergarments leap simultaneously one foot to the left, in accordance with the theory of indeterminacy.

Many respectable physicists said that they weren’t going to stand for this, partly because it was a debasement of science, but mostly because they didn’t get invited to those sorts of parties.

The physicists encountered repeated failures while trying to construct a machine which could generate the infinite improbability field needed to flip a spaceship across the mind-paralyzing distances between the farthest stars. They eventually announced that such a machine was virtually impossible.

Then, one day, a student who had been left to sweep up after a particularly unsuccessful party found himself reasoning in this way: “If such a machine is a virtual impossibility, it must have finite improbability. So all I have to do, in order to make one, is to work out how exactly improbable it is, feed that figure into the finite improbability generator, give it a fresh cup of really hot tea... and turn it on!” He did this and managed to create the long sought after golden Infinite Improbability generator out of thin air. Unfortunately, shortly after he was awarded the Galactic Institute’s Prize for Extreme Cleverness, he was lynched by a rampaging mob of respectable physicists on the ground that he has became the one thing they couldn’t stand most of all: “a smart arse”.


46 posted on 02/19/2026 2:31:27 PM PST by dfwgator ("I am Charlie Kirk!")
[ Post Reply | Private Reply | To 2 | View Replies]

To: citizen

I don’t believe many of them are clinically insane.

Most of them are so abysmally ignorant that they’re easily blinded by bullstuff.

A few of them are clever grifters who have figured out how to make a buck peddling bullstuff to the abysmally ignorant.


47 posted on 02/19/2026 2:31:54 PM PST by NorthMountain (... the right of the people to keep and bear arms shall not be infringed)
[ Post Reply | Private Reply | To 36 | View Replies]

To: rexthecat
Richard Feynman’s physics reveals why aliens cannot reach Earth

But high ranking government officials have been hinting at "disclosure" for the past 10 years. They wouldn't lie to us.

48 posted on 02/19/2026 2:31:56 PM PST by nitzy (I don’t trust good looking country singers or fat doctors.)
[ Post Reply | Private Reply | To 1 | View Replies]

To: Alberta's Child

Gravity is tied directly to space/time in general relativity.
Break that and time is no longer the issue.


49 posted on 02/19/2026 2:31:57 PM PST by Dead Corpse (A Psalm in napalm...)
[ Post Reply | Private Reply | To 37 | View Replies]

To: rexthecat

Feynman was not able to make it to Tannu Tuva, so naturally he doesn’t think anyone can make it as far as Proxima Centauri.


50 posted on 02/19/2026 2:32:50 PM PST by Verginius Rufus
[ Post Reply | Private Reply | To 1 | View Replies]

To: rexthecat

Not everyone agrees with this hypothesis. Newtonian Laws are only applicable up to the speed of light. As long as we are limited to sub-light velocity, then we are shooting in the dark, (literally).


51 posted on 02/19/2026 2:34:05 PM PST by Eli Kopter (Wherever you are, that is where you are supposed to be...)
[ Post Reply | Private Reply | To 1 | View Replies]

To: Envisioning
Yes. I know all of the arguments. A plane hit the Pentagon and B7 was damaged by fire and debris to the 10th floor by the Towers dropping. The REAL conspiracy was that the Bush Administration KNEW it was going to happen and LET IT to justify DHS/TSA and the Gulf War. The Troofer garbage is chaff thrown up to hide this under layers of Alex Jones level BS.

Now... something far more interesting... Special relativity, theories of quantum gravity, Hubble tension, and how little we know about how the Universe works...

52 posted on 02/19/2026 2:35:53 PM PST by Dead Corpse (A Psalm in napalm...)
[ Post Reply | Private Reply | To 39 | View Replies]

To: rexthecat
I have to wonder, what's the point of traveling to the moon, or Mars, if that's as far as we're ever going to get?

Because evolutionists said life evolved all across the universe

53 posted on 02/19/2026 2:36:47 PM PST by fso301
[ Post Reply | Private Reply | To 1 | View Replies]

To: x

“What makes it impossible?”

The Impossibility Factor. Duh!


54 posted on 02/19/2026 2:36:50 PM PST by ProtectOurFreedom
[ Post Reply | Private Reply | To 6 | View Replies]

To: Alberta's Child
Check your math.

I believe you're just a tad bit off. It would take ~2,900 years to reach Alpha Centauri traveling at 1 million MPH.

However, that does translate to ~25 million hours.

A Generational Ship would possibly be a feasible technology we can attain to get to the closest star in many lifetimes, but it's not necessarily impossible, even at our level of tech knowledge.

55 posted on 02/19/2026 2:38:30 PM PST by Pox (Eff You China. Buy American!)
[ Post Reply | Private Reply | To 7 | View Replies]

To: dfwgator

Oh no, not again...


56 posted on 02/19/2026 2:38:33 PM PST by Dead Corpse (A Psalm in napalm...)
[ Post Reply | Private Reply | To 46 | View Replies]

To: thepoodlebites; SkyDancer

57 posted on 02/19/2026 2:40:01 PM PST by Larry Lucido (Donate! Don't just post clickbait.)
[ Post Reply | Private Reply | To 22 | View Replies]

To: sauropod

.


58 posted on 02/19/2026 2:43:19 PM PST by sauropod
[ Post Reply | Private Reply | To 1 | View Replies]

To: rexthecat

Youtube is bursting with AI-Feynman videos. Many are interesting but — enough already!


59 posted on 02/19/2026 2:45:02 PM PST by Buttons12 ( )
[ Post Reply | Private Reply | To 1 | View Replies]

To: Reily

When we figure out gravity, we’ll probably figure out time/energy/mass.


60 posted on 02/19/2026 2:45:07 PM PST by CodeToad
[ Post Reply | Private Reply | To 38 | View Replies]


Navigation: use the links below to view more comments.
first previous 1-2021-4041-6061-80 ... 221-225 next last

Disclaimer: Opinions posted on Free Republic are those of the individual posters and do not necessarily represent the opinion of Free Republic or its management. All materials posted herein are protected by copyright law and the exemption for fair use of copyrighted works.

Free Republic
Browse · Search
General/Chat
Topics · Post Article

FreeRepublic, LLC, PO BOX 9771, FRESNO, CA 93794
FreeRepublic.com is powered by software copyright 2000-2008 John Robinson