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The inevitability of interstellar travel
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brigadecommander
06-Aug-25, 13:57

The inevitability of interstellar travel
worth the (time) watching;;www.youtube.com
cyber-1
06-Aug-25, 15:08

I watched
I loved this!

I think that you do not believe in a creature, but I do, although I do not belong to any religion and I do not attend to any Church!

Thank You for this youtube video

Amassing

Kind Regards

Jimmy
mo-oneandmore
06-Aug-25, 20:22

Deleted by mo-oneandmore on 06-Aug-25, 20:44.
mo-oneandmore
06-Aug-25, 20:44

It's fun to dream, but
I've always enjoyed the Cosmos programs that Carl Sagan presented so well, but I have long believed that he might have been bit of a dreamer and/or desirous of something more for the universe and for Man to the extent that he tended to ignore a few scientific facts when he discussed his ideas about a universe/galaxy that's packed with many levels of super technical advancement and intelligent beings, let alone the near inevitable odds against Man or any extraterrestrial super intelligence ever achieving anything more than possible travel to the very nearest stars.
Indeed. The odds that Man will ever discover the existence of technically advanced space beings is it's self something that's near zero.

The propagation of radio waves makes for too small of a signal for practical detection, the needed speed is unattainable, the cost is prohibitive, the energy requirement is near unobtainable, the necessary acceleration/deacceleration is unbearable, the life-span of Man and machinery is too finite and the effect on Man in in hostile space is deadly, etc.
Alas: the issues work the same for both extraterrestrials and Earthly humans.
vanessashane
06-Aug-25, 21:04

A depressing take on this is...
A depressing take on this is (and sadly realistic): theoatmeal.com
mo-oneandmore
06-Aug-25, 21:11

Vanessa
Funny, depressing to some and likely true.
bobspringett
06-Aug-25, 21:22

Vanessa
Good one! Effectively the same.
bobspringett
06-Aug-25, 21:26

Mo 20:44
I tend to agree with you, but...

There was a time when humans though crossing a big river was incredibly dangerous. Now millions of vehicles do it every day. There was a time when we couldn't even imaging sailing around the world; now some people routinely do it every ninety minutes.

As a character says in one of my novels, "The Impossible is a brick wall; until you get close enough to see the cracks."

So I wouldn't be surprised if I'm proved wrong.
brigadecommander
06-Aug-25, 22:54

Bob
Well said indeed!!!!!!!!!!!!!!!!!!!!!
lord_shiva
07-Aug-25, 04:59

Doomsday
Earth’s gentle decline into authoritarianism is a good indicator we’re going to destroy ourselves long before we could get interstellar. Look at how we have chosen to wage war on our environment, destroying the EPA for the glorious benefit of our beloved wealthy elite, MAGA. The way we have gutted education, arts, museums, and libraries means the elite won’t have decent talent to exploit to achieve interplanetary dreams, much less interstellar.

86 seconds to midnight doesn’t include nuclear subs launched to frighten Putin, who doesn’t envision a world he is not dominating. Same with the idiot we vaulted to the world’s highest office.
brigadecommander
07-Aug-25, 05:21

LS
Cark Sagan spoke of that every time he made comments. Long before trump. trump has accelerated the process.
apatzer
07-Aug-25, 05:57

Trump is the gangrene that has resulted. If not for the reopening of gaping wounds that never were fully mended to begin with. Trump would not have power. He is there because the rich people of the world want him there. They never have enough. But with Trump they have grossly miscalculated.

The wounds of 2008 housing crisis, the wounds of opioid epidemic and most of all the myriad of wounds caused by financial predation on a daily basis.
apatzer
07-Aug-25, 06:17

That's why they buy media and lead people by their noses. They make you upset, outraged and eventually despondent. They make you believe that your struggle is on the X axis, when in fact it's always been on the Y axis. They incite you to wage your culture war on the x-axis so that they don't have to fight a class war on the y-axis. They have learned from the occupy movement where occupy Wall Street they have learned the lessons of the 60s and 70s average people not so much.
jonheck
07-Aug-25, 12:08

We might get to see some machines, friendly teacher types would be nice. Odds are there are some that have been looking around out there for a long time.
mo-oneandmore
07-Aug-25, 12:13

sweet dreams
Dreaming about a vacation on the Starship Enterprise and talking to Spock is fun, and it's easy enough to do if one ignores relativity.
apatzer
07-Aug-25, 12:34

What is reality?
mo-oneandmore
07-Aug-25, 12:55

Anti gravity power
The idea of using an anti gravity engine to power a space ship doesn't work well.
For example: If Man developed an antigravity machine that used the gravity of the universe to "pull" instead of "pull our metal steed into the oblivion of a body, the best it would be able to muster is a hover on the surface of the body; and if you thought you could use the gravity of the sun to do the job better --- The sun's gravitational pull on earth is about 1/1600 the gravitational pull of earth (1-g) on it's surface.
To find out why, see the effect of distance on gravitational force --- a simple enough equation.

www.google.com

Physics gets in the way and there simply ain't enough weak force out there to do the job, y'all.
mo-oneandmore
07-Aug-25, 13:10

Apat
Your 12:34 question.

Reality is REAL stuff that exists even if it's currently unknown by Man or any other beings-- All "real" physical stuff has existed since the Big Bang, waiting for Man, etc to find it.

Time travel and surfing the stars at warp speeds, etc, is unattainable science fiction --- See fake news, cool movies and/or dream-world stuff.

Indeed: Not everything is possible in the physical..
mo-oneandmore
07-Aug-25, 13:29

Time dealation
There's more to it than mere speed.

Here's some interesting and creative "arithmetic" about the matter straight out of Einstein's brain again. 
en.wikipedia.org
mo-oneandmore
07-Aug-25, 13:36

relativity and gravity again
Further basics for the more dedicated reader
books.google.com

Or just listen to Tia-Pe Ching if you prefer
www.youtube.com
cyber-1
07-Aug-25, 15:17

Is the world round or flat
We know it is round, but even now I know people who believe it is flat.

I haven't looked anything up recently, but from my past knowledge, it says at Job in the Bible KJ that the world is round or words to that effect, then before Christ BC 250? Greek philosophers' stated that the world is round. I think a Spanish ship went off, on its travels in the 1500's and after finding that they never fell off the edge of the world, and after making it to China, they declared that the world is round.

So even though we had evidence from the Bible and from Greek philosophers, we did not believe or understood that the world is round, until the 1500's

We are now looking at fantastic things in space and we take it for granted that we understand about what we are seeing! Do we?

Kind Regards!

Jimmy
lord_shiva
07-Aug-25, 16:44

Washington Irving
<< So even though we had evidence from the Bible and from Greek philosophers, we did not believe or understood that the world is round, until the 1500's>>

Irving was a crappy historian who popularized the erroneous myth the flat earth was a common medieval belief. It was not. Most people were well aware the earth was a sphere, knowledge the ancient Greeks and Egyptians possessed two thousand years before them. The Greeks worked out the distance to the moon at thirty Earth diameters several centuries before Eratosthenes measured our world.

In short, people did not believe the world was flat. The ignorant might have accepted it then, but only idiots believe it today.
lord_shiva
07-Aug-25, 16:58

Spacetime
Spacetime only flows forward. No going back. While mass warps spacetime, and can rip it, it cannot bend spacetime upwards. Down is the only direction. Gravity curves down, never up, as it is an artifact of spacetime curvature.

I need to learn more about the Higgs boson. The photon is a gauge boson the mediates the electromagnetic interaction. So the graviton mediates gravitation. It was initially calculated we would need a device the size of Jupiter to run several million years to detect gravitons, but we have improved methodologies such that we should enjoy success with a much smaller device within just decades instead. A real feat!

cyber-1
07-Aug-25, 17:00

Thank You
Thank You Lord_shiver

There are idiots and many of them are entitled to vote when it comes to electing a president or in my country a prime minister

mo-oneandmore
07-Aug-25, 17:07

Shiva
Back to gravitons and those pesky ideas about connecting Quantum Mechanics and Relativity again.

From China
thequantuminsider.com
cyber-1
07-Aug-25, 17:37

I believe that space is for the Angels and what you are seeing is what the creator is allowing you to see!

Enjoy and Kind Regards For Ever!

Jimmy  
lord_shiva
07-Aug-25, 18:14

Kicking Out Angels
Well, we have lofted a lot of stuff into orbit and beyond. Now we are developing a small nuclear power plant for operation during the lunar fortnight. Mankind pushes forward where angels fear to tread. We need to catch some angels, maybe torture them until they sing. I wonder if gravitons are tiny angels.

The men of Sodom knew how to treat angels. Lot wouldn’t let them. Fortunate for us we have no Lot to interfere. Maybe give the angels anal probes, or dubious medical experiments. Skin grafts. I wonder what angelic skin grafts might be like. Would they render me impervious to manmade weapons, particle beams, and so on? Could angelic skin grafts render me invisible? That would be cool. Well worth skinning an angel or two, Buffalo Bill style.
lord_shiva
07-Aug-25, 18:17

Burning Angels
www.deccanherald.com

www.wired.com
bobspringett
07-Aug-25, 19:52

Shiva 18:17
The Deccan Herald page you linked had a side story stating that the Earth is spinning faster.

This surprised me. Even though we are probably taling milliseconds, my undertanding was thhat the earth's spinwas slowing, for two reasons:-

1. Tidal drag from the moon.

2. as Greenland and Antarctic ice melts and re-distributes around the globe to equatorial regions, conservation of angular momentum would also require the earth to spin more slowly.

Do you have any information on this?
bobspringett
07-Aug-25, 20:00

Shiva 18:17 (part 2)
I have read elsewhere about putting a nuclear power plant on the moon.

I can see the logic of the reasons given, the lunar night of 14 days making battery storage more bulky and expensive. But I would have expected solar cells providing power for operation plus excess for electrolysis of water through the day and fuel cells through the night would be quicker, cheaper, simpler, safer and more easily maintained/repaired.

I also have read that the favoured site for a moon base was the South Pole, in part because of perpetual sunlight being accessible from a high enough mast, as well as the presence of ample water in the permafrost.

What is your take? Or is this just an excuse to put nuclear power on the moon as part of the anti-renewables culture wars?
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