Wanderers: a short film of humanity's expansion into the Solar System [video] • Hacker News Board

Re: Wanderers: a short film of humanity's expansion into the Solar System [video]

#131

Post by shmerl » Mon, Dec 01, 2014, 4:37 PM UTC

rbanffy wrote: post #130

shmerl wrote: post #120

Earlier quoted context omitted.

I used it as a wallpaper for a long time too :) > There is also another one, with a small Earth shining above the horizon. Do you mean a shot on Mars? Can you link to it please?

I'm having trouble getting to the files myself (the NSA proxy must be offline), but depending on networking conditions, you may be luckier: http://mars.jpl.nasa.gov/msl/news/whatsnew/index.cfm?FuseAct...

It worked for me, thanks! Great shot. Here is the actual page for the image: http://photojournal.jpl.nasa.gov/catalog/PIA17936

Re: Wanderers: a short film of humanity's expansion into the Solar System [video]

#132

Post by manu3000 » Mon, Dec 01, 2014, 8:22 PM UTC

onewaystreet wrote: post #102

revscat wrote: post #88

Earlier quoted context omitted.

> Another important point is that a lot of our problems here on Earth are entirely self-inflicted (e.g. inequality, pollution, global warming) and so they can't simply be fixed by throwing money at them: they need political transformation. Yes, but so long as global warming is a threat then the notion of humanity expanding to the stars is a pipe-dream. If the planet becomes incapable of supporting advanced social str…

None of that is going to happen anytime soon. Market forces (oil prices are down now, but in the long term they will go back up forcing us to move to cleaner alternatives) as well as the beginning effects of global warming (flooding) will force us to change long before the planet becomes uninhabitable.

IPCC says +5 deg at end of this century... isn't that soon ? Last time this happened (250 millions years ago) 95% of existing species were wiped out (http://www.truth-out.org/news/item/27714-are-humans-going-ex...)

Re: Wanderers: a short film of humanity's expansion into the Solar System [video]

#133

Post by rasz_pl » Mon, Dec 01, 2014, 9:31 PM UTC

ehsanu1 wrote: post #111

rasz_pl wrote: post #99

Earlier quoted context omitted.

I would suggest this too https://www.youtube.com/watch?v=F-QA2rkpBSY

While there are many who people do not understand exponential growth, such as that video's target audience, I'm pretty sure that none of them are population projectionists.

Its not that they dont understand, they dont even think about it. Even Hans Rosling from the clip above spends whole 3 seconds on the subject of energy needed to support 20 Billion people living at the same comfortable level as top billion people today in developed countries.

I seem to remember some funny back of envelope calculations that put energy needs of earth in 100 years (assuming current growth) at _full output_ of our sun.