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Jan 21, 2017 at 13:07 answer added nigel222 timeline score: 0
May 21, 2015 at 10:43 comment added user6760 @YoMismo if you are describing a high mass star yes they die young while low mass star at most 1.4 times as massive as our Sun can "live" for billions of years.
May 21, 2015 at 8:25 comment added YoMismo @user6760 to become a black hole it has to exhaust its hydrogen AND have certain mass, hasn't it? whith higher mass what we will have is a higher hydrogen consumption rate since we need to keep stable the gravity-outward pressure, won't we? There are other stars much hotter than our sun just because they are denser that's my reason to think more mass will raise heat & hydrogen consumption thus reducing life. Before we could have a black hole (2-3 sun masses) we will have black and white dwarfs and neutron stars, so we have room before becoming a black hole.
May 21, 2015 at 7:17 comment added user6760 @YoMismo our sun fuses a lot of hydrogen into helium and produce lots of energy (gamma rays) this outward pressure is being balanced by its weight (too much weight the Sun risks becoming black hole when gravity overwhelm its outward pressure) normally coulomb barrier prevent two hydrogen nucleus to fuse (same charges repel) but there is a likelihood one with tunnel over when two hydrogen are in close proximity so our sun can do without a fever! if you introduce different diet Sun will need even more binding energy to digest else it risk developing strode and collapse lol.
May 21, 2015 at 6:44 comment added YoMismo @user6760 won't adding more mass make it denser, having more gravity its temperature will raise and more fuel will be counsumed, reducing it's life time?
May 21, 2015 at 1:24 comment added user6760 @YoMismo as long as there are plenty of hydrogen reserve left in the Sun adding any amount of mass will not work except probably turning it into a black hole and that's not a good idea.
May 20, 2015 at 11:04 comment added YoMismo What about adding more mass to the sun?
May 20, 2015 at 10:32 answer added Capt timeline score: 0
May 20, 2015 at 7:07 comment added user6760 ever heard of twin paradox? your hero/ine can take off in a relativistic rocket around the universe in 3.7 billion years traveling at 0.999999 time the speed of light in vacuum and then return to reconcile with his/er twin on Earth whom experienced 7.5 billion years have passed! what a "torching" moments just because of your stupid hatred for the sun!
May 20, 2015 at 0:28 answer added James timeline score: 0
May 19, 2015 at 20:12 comment added LindaJeanne Some questions for clarification: 1) What do you mean by "dead"? Red giant? Burned out completely? Just "greatly changed" somehow? 2) Does the Earth need to still be present, be completely gone, to be present but uninhabitable, or is it completely irrelevant? 3) Is the natural time-frame being too long an indication that you want a recognizable human civilization to remain after the sun's death? Or is there another reason? (Just want to be sure we're all trying to answer the correct quesiton! )
May 19, 2015 at 14:20 comment added John Odom Wouldn't shooting a massive ball of Iron the size of a planet work? I know it's VERY unrealistic but it's just a guess :P.
May 19, 2015 at 14:10 answer added aslum timeline score: 0
May 19, 2015 at 13:53 comment added Random832 I had a thought about the 7.5 billion years: While it's usually not done to this extent, some stories set thousands or even millions of years in the future do keep human civilization in a recognizable form by saying that A) medical technology, etc, means evolution has stagnated - that humans will basically look the same forever as they do now B) the 20th and 21st century was a special time in human history, never forgotten (even so much later) because it's when we first went into space.
May 19, 2015 at 13:47 answer added Eldritch Cheese timeline score: 2
May 19, 2015 at 13:45 comment added Mazura Are you aware that Earth will not survive this transition?
May 19, 2015 at 8:52 comment added Kara Potts Something to ponder: do you even need to explain? If your characters are hyper-advanced humans then maybe they should be able to explain why the sun has gone off early; but if they've regressed to the Stone age, maybe all you need is to tell some garbled legends.
May 19, 2015 at 8:30 comment added Kyle Relevant question on physics SE: physics.stackexchange.com/questions/123569/…
May 19, 2015 at 6:15 comment added user6760 Why are you (or the people) so keen to see our Sun dying? also 7.5 billion years is longer than any living organism to stomach let alone people but I have a great plan and it'll discount 0.5 billion years from Sun remaining life expectancy wanna hear it?
May 19, 2015 at 4:25 answer added Keith timeline score: 0
May 19, 2015 at 1:28 comment added hobbs Suggestion for someone more knowledgeable than me — if you somehow had an absurdly large muon beam and pointed it at the sun, could you induce muon-catalyzed fusion or something like that?
May 19, 2015 at 0:36 answer added Ville Niemi timeline score: 0
May 19, 2015 at 0:12 answer added adrian timeline score: 0
May 18, 2015 at 22:11 answer added Jimmy360 timeline score: 1
May 18, 2015 at 21:36 answer added Oldcat timeline score: 10
May 18, 2015 at 19:26 answer added JDługosz timeline score: 10
May 18, 2015 at 18:49 answer added Thucydides timeline score: 1
May 18, 2015 at 18:34 answer added Dan Smolinske timeline score: 20
May 18, 2015 at 18:31 answer added AutoDMC timeline score: 12
May 18, 2015 at 18:16 comment added Mikey Great question, and welcome to the site. I look forward to the answers, but basically your red giant occurs only when it runs out of hydrogen and helium. I suspect you will have to artificially remove it from the core somehow?
May 18, 2015 at 17:45 review First posts
May 18, 2015 at 18:46
May 18, 2015 at 17:40 history asked Sarah CC BY-SA 3.0