DoctorOfSpace wrote:

gamadh wrote:

Source of the post remember that overcoming the speed of sound was impossible in the past

There was nothing in the laws of physics that said traveling faster than sound was impossible, it was a true engineering problem.  The two cannot be compared

Other thing is, it's not really a problem of time, as if you get close enough to speed of light you won't experience much passage of time no matter how long the journey.
You don't think that solving the quantum gravity problem will help us find a way around the issue though?

Salvo, I read this excellent link you posted

https://mic.com/articles/88483/somethin ... .oHlXjW518

But here is the problem (you see this with antibiotics and pesticides and why we're moving away from them towards ways to boost our own immune system to fight illnesses): microbes, weeds and many other creatures evolve far faster than people do.  Those creatures will become immune to the very things that we use to kill them much earlier than we ever would (and already are.)  So ironically, they become a far bigger threat to people than the creatures they were designed to kill.

Gnargenox, A-L-E-X, JackDole,  the problem with interstellar travel comes down to some very simple and easy math. 

Here is a pretty good site, with a built in calculator that sums it up nicely

http://nathangeffen.webfactional.com/sp ... ulties.php

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As for going more in depth on warp drives and wormholes I will wait for Watsisname

Alternatively you could check this link, its still valid enough
https://www.bibliotecapleyades.net/cien ... port04.htm

DoctorOfSpace wrote:

Gnargenox, A-L-E-X, JackDole,  the problem with interstellar travel comes down to some very simple and easy math. 

Here is a pretty good site, with a built in calculator that sums it up nicely

http://nathangeffen.webfactional.com/sp ... ulties.php

---

As for going more in depth on warp drives and wormholes I will wait for Watsisname

Doc, I think we've discussed this possibility
Another, (perhaps far-fetched?) possibility, is that one day it will be possible to download the human brain, to something as small as a microchip, with durability of hundreds if not thousands of years. Perhaps if this is the future evolution of our species, we will be able to travel in this form to distant stars without being too concerned about the time it takes. (A reader has expressed scepticism of this idea, and so have some philosophers and scientists.)
And how about the possibility of a large generation ship with artificial gravity, atmosphere and sunshine (like a human-made rogue planet really) that journeys through space?  We should be able to get to the nearest stars in 50 years at any rate and over myriads of generations explore the rest of the galaxy.
ve some philosophers and scientists.)

A-L-E-X, that is much more likely.  Digitized minds would be far more efficient and easier to deal with than fleshy squishy biology.

A-L-E-X wrote:

Source of the post And how about the possibility of a large generation ship with artificial gravity, atmosphere and sunshine (like a human-made rogue planet really) that journeys through space?  We should be able to get to the nearest stars in 50 years at any rate and over myriads of generations explore the rest of the galaxy.

Problem is required resources to build and power such a ship.  The link above explains this stuff much better than I can.

DoctorOfSpace wrote:

A-L-E-X, that is much more likely.  Digitized minds would be far more efficient and easier to deal with than fleshy squishy biology.

A-L-E-X wrote:

Source of the post And how about the possibility of a large generation ship with artificial gravity, atmosphere and sunshine (like a human-made rogue planet really) that journeys through space?  We should be able to get to the nearest stars in 50 years at any rate and over myriads of generations explore the rest of the galaxy.

Problem is required resources to build and power such a ship.  The link above explains this stuff much better than I can.

Yes indeed.  It discusses the two possibilities that we would have in controlled fusion and antimatter powered engines.
I guess we would have to move pretty far up the Kardashev scale, right now we are a measly 0.7  Do you think we can get to level 2 at least Doc, or are we likely to go extinct first?  
Sagan seemed to like the scale.
https://en.wikipedia.org/wiki/Kardashev_scale
The Kardashev scale is a method of measuring a civilization's level of technological advancement, based on the amount of energy a civilization is able to use for communication.[1] The scale has three designated categories:

A Type I civilization — also called a planetary civilization — can use and store all of the energy which reaches its planet from its parent star.
A Type II civilization — also called a stellar civilization — can harness the total energy of its planet's parent star (the most popular hypothetical concept being the Dyson sphere—a device which would encompass the entire star and transfer its energy to the planet(s)).
A Type III civilization — also called a galactic civilization — can control energy on the scale of its entire host galaxy.[2]

Some interesting articles

https://singularityhub.com/2017/06/18/w ... you-think/

http://mkaku.org/home/articles/the-phys ... ar-travel/

https://futurism.com/here-future-inters ... pacecraft/

Michio Kaku has many interesting articles on his page

http://mkaku.org/home/articles/

A-L-E-X,not a fan of the Kardashev scale.  It seems rather human-centric, especially if you give Isaac Arthur's video a watch.  His black hole farming video kinda puts these notions of ever increasing energy use to shame.

Nice video, Doc!  "Black Hole Farming" is an interesting concept.  I've seen an idea of using mini black holes to power space ships used before in sci fi stories, I wonder if we will do that one day.

apparently there's no sign of intelligent life, so humanity has no future.

Mosfet wrote:

Source of the post apparently there's no sign of intelligent life, so humanity has no future.

There is still the possibility that life is such an unlikely coincidence that it can not be repeated in the lifetime of the universe.
In other words, one of the Great Filters is the improbability for the emergence of life.
Then maybe we have a future. Although this is absolutely unlikely.

JackDole wrote:

Source of the post Although this is absolutely unlikely.

Unlikely but definitely possible, and that is an absolutely crazy thing to think about.

DoctorOfSpace wrote:

JackDole wrote:

Source of the post Although this is absolutely unlikely.

Unlikely but definitely possible, and that is an absolutely crazy thing to think about.

I think it's more likely that life doesn't exist anywhere at all, and we are all just part of a collective dream

Planet of the Apes Part 1 and 2?