Destroying planets View Thread Reply Hide Paul Goldsmith - Wed, 25 Mar 2015 01:03:03 EST kbd81O3H No.55163 File: 1427259783354.jpg -(39309B / 38.39KB, 1133x900) Thumbnail displayed, click image for full size. Why would you want to destroy a planet? In the movie Dark Star, they blew up entire worlds because "instable planets" could threaten the future colonization of other planets. Is it viable to blow up a planet to mine it as with asteroids? What other use could it have? Elimination of gravitatory perturbances in an Interplanetary Transport Network? Blowing it up wouldn't send tons of material into chaotic orbits?Sorry for too many questions. I just read about asteroid mining and thought about why not Jupiter with all that hydrogen? 3 posts and 1 images omitted. Click View Thread to read. >> Grote Reuber - Fri, 27 Mar 2015 18:04:33 EST CB4800qQ No.55177 Reply 1427493873374.jpg -(19162B / 18.71KB, 428x214) Thumbnail displayed, click image for full size. Too bad Galileo failed to ignite Jupiter. >> Galileo Galilei - Sun, 29 Mar 2015 21:49:03 EST jOF47H5F No.55181 Reply >>55177It's never too late. >> Rudolph Minkowski - Mon, 06 Apr 2015 22:16:50 EST OXINl/7g No.55215 Reply >Is it viable to blow up a planet to mine it as with asteroids?That would take a lot of energy, a ton of which would be released as heat. I think the debris would be too hot to be useful or mine-able for a LONG time.>>55177I would be awesome if that dishwasher-sized satellite was the last tiny bit of mass needed to collapse Jupiter's core and start the fusion reaction.
>> Grote Reuber - Fri, 27 Mar 2015 18:04:33 EST CB4800qQ No.55177 Reply 1427493873374.jpg -(19162B / 18.71KB, 428x214) Thumbnail displayed, click image for full size. Too bad Galileo failed to ignite Jupiter.
>> Galileo Galilei - Sun, 29 Mar 2015 21:49:03 EST jOF47H5F No.55181 Reply >>55177It's never too late.
>> Rudolph Minkowski - Mon, 06 Apr 2015 22:16:50 EST OXINl/7g No.55215 Reply >Is it viable to blow up a planet to mine it as with asteroids?That would take a lot of energy, a ton of which would be released as heat. I think the debris would be too hot to be useful or mine-able for a LONG time.>>55177I would be awesome if that dishwasher-sized satellite was the last tiny bit of mass needed to collapse Jupiter's core and start the fusion reaction.
Early space programme View Thread Reply Hide Kiyotsugu Hirayama - Wed, 18 Mar 2015 14:00:34 EST A1E2ozZS No.55144 File: 1426701634395.jpg -(25279B / 24.69KB, 350x300) Thumbnail displayed, click image for full size. I recently realised that I'm completely fascinated with the early space programmes / the early space technology / the early space race. I would say from the very beginning until the end of the 80's.My request: recommended information, books, documentaries, websites, cheesy anecdotes.. Anything really.Thanks a lot. 2 posts omitted. Click View Thread to read. >> William de Sitter - Tue, 24 Mar 2015 17:02:07 EST CB4800qQ No.55160 Reply 1427230927705.jpg -(26506B / 25.88KB, 299x324) Thumbnail displayed, click image for full size. I found one of the early motivating factors for the space race. >> Joseph Lockyer - Tue, 24 Mar 2015 21:41:19 EST YbQiwQ8y No.55161 Reply Check out Werner von Braun and his V2 rocket built first for the Nazi party, then Americans extradited him to the US (clearing him of any war-crime charges) and put him to work. There is also a Modern Marvels episode called 'Satellite'. Goes pretty in depth about the whole space race etc... >> Stephen Hawking - Thu, 02 Apr 2015 18:13:04 EST d7Dhf0QA No.55211 Reply >>55145http://www.oxforddictionaries.com/definition/english/programmeAre you laughing at him for using the correct spelling?nb
>> William de Sitter - Tue, 24 Mar 2015 17:02:07 EST CB4800qQ No.55160 Reply 1427230927705.jpg -(26506B / 25.88KB, 299x324) Thumbnail displayed, click image for full size. I found one of the early motivating factors for the space race.
>> Joseph Lockyer - Tue, 24 Mar 2015 21:41:19 EST YbQiwQ8y No.55161 Reply Check out Werner von Braun and his V2 rocket built first for the Nazi party, then Americans extradited him to the US (clearing him of any war-crime charges) and put him to work. There is also a Modern Marvels episode called 'Satellite'. Goes pretty in depth about the whole space race etc...
>> Stephen Hawking - Thu, 02 Apr 2015 18:13:04 EST d7Dhf0QA No.55211 Reply >>55145http://www.oxforddictionaries.com/definition/english/programmeAre you laughing at him for using the correct spelling?nb
black hole the size of 12 billion suns found, debunks all theories of the universe View Thread Reply Hide Urbain Le Verrier - Thu, 26 Feb 2015 19:38:03 EST GFgbSSMF No.55071 File: 1424997483202.jpg -(32556B / 31.79KB, 534x401) Thumbnail displayed, click image for full size. http://www.independent.co.uk/news/science/black-hole-as-massive-as-12-billion-suns-found-could-change-theories-of-how-universe-began-10071817.htmlThis article tripped me the fuck out, and scared me a bit. I don't like that something this scary is visible from Earth. 15 posts and 3 images omitted. Click View Thread to read. >> Harlow Shapley - Fri, 20 Mar 2015 09:18:57 EST 415JX8nG No.55149 Reply >>55148I think you're fine, just didn't take in angular momentum of the earth and time doesn't become a factor until you use relativity >> Charles Bolton - Fri, 20 Mar 2015 12:39:27 EST jScv5urc No.55151 Reply >>55148Your math horribly wrong. I don't think you have calculated the distance correctly. >> Urbain Le Verrier - Fri, 20 Mar 2015 23:32:14 EST JIt5A3UU No.55153 Reply >>55149>>55151No, I am stupid, forgot to square the total distance. Total force between the two bodies is 557 N, we gud
>> Harlow Shapley - Fri, 20 Mar 2015 09:18:57 EST 415JX8nG No.55149 Reply >>55148I think you're fine, just didn't take in angular momentum of the earth and time doesn't become a factor until you use relativity
>> Charles Bolton - Fri, 20 Mar 2015 12:39:27 EST jScv5urc No.55151 Reply >>55148Your math horribly wrong. I don't think you have calculated the distance correctly.
>> Urbain Le Verrier - Fri, 20 Mar 2015 23:32:14 EST JIt5A3UU No.55153 Reply >>55149>>55151No, I am stupid, forgot to square the total distance. Total force between the two bodies is 557 N, we gud
How does it make you feel? View Thread Reply Hide Daniel Kirkwood - Sun, 15 Feb 2015 04:36:13 EST 9T8PqMeL No.55035 File: 1423992973167.png -(289416B / 282.63KB, 405x455) Thumbnail displayed, click image for full size. So as far as I know, there are two theories on the ultimate fate of the Universe. One is that the Universe will experience heat death and that chemical reactions and everything reliant upon them will cease to be. The other is that the universe will tear itself a new one, collapse in on itself and reset. Either way, humanity, every other sapient species in the universe and everything we've ever known and accomplished will amount to nothing.On a scale from "Stubbed your toe" to "Visigoths sacking Rome", how does that make you feel?For me, I'd say that it triggers a "Read Ecclesiastes and contemplated petty arson" kind of feeling. 18 posts and 2 images omitted. Click View Thread to read. >> Allan Sandage - Fri, 06 Mar 2015 15:36:34 EST Wzs50sSC No.55109 Reply > Either way, humanity, every other sapient species in the universe and everything we've ever known and accomplished will amount to nothing.I'll be dead long before that happens, so I honestly don't care. I just want to live my life to the fullest, do chill science stuff, and hopefully try to help others when I am able to. >> Karl Jansky - Fri, 06 Mar 2015 19:02:10 EST FVrU3tol No.55111 Reply >>55107Throwing that weak mess around here is kind of insulting >> Edwin Hubble - Fri, 20 Mar 2015 11:22:01 EST IGgsfW+0 No.55150 Reply >>55035Personally, I already felt like whatever humans did would amount to nothing in the grand scheme of things anyway. I have absolutely no faith that Humanity won't completely blow each other up in the future and eventually when Earth dies entirely nothing we didw would matter anyway. I don't believe we'll ever colonize another planet or anything, I think we're too stupid as a species for anything that cool.
>> Allan Sandage - Fri, 06 Mar 2015 15:36:34 EST Wzs50sSC No.55109 Reply > Either way, humanity, every other sapient species in the universe and everything we've ever known and accomplished will amount to nothing.I'll be dead long before that happens, so I honestly don't care. I just want to live my life to the fullest, do chill science stuff, and hopefully try to help others when I am able to.
>> Karl Jansky - Fri, 06 Mar 2015 19:02:10 EST FVrU3tol No.55111 Reply >>55107Throwing that weak mess around here is kind of insulting
>> Edwin Hubble - Fri, 20 Mar 2015 11:22:01 EST IGgsfW+0 No.55150 Reply >>55035Personally, I already felt like whatever humans did would amount to nothing in the grand scheme of things anyway. I have absolutely no faith that Humanity won't completely blow each other up in the future and eventually when Earth dies entirely nothing we didw would matter anyway. I don't believe we'll ever colonize another planet or anything, I think we're too stupid as a species for anything that cool.
CERES, BITCH View Thread Reply Hide Stephen Hawking - Thu, 26 Feb 2015 04:28:40 EST uyuUt0io No.55065 File: 1424942920059.jpg -(467396B / 456.44KB, 1873x1044) Thumbnail displayed, click image for full size. LOOK AT THIS FUCKING THINGHOW NEAT 6 posts and 1 images omitted. Click View Thread to read. >> Stephen Hawking - Fri, 06 Mar 2015 14:16:37 EST jGLzk50k No.55108 Reply 1425669397799.png -(23663B / 23.11KB, 1000x1000) Thumbnail displayed, click image for full size. http://www.nasa.gov/press/2015/march/nasa-spacecraft-becomes-first-to-orbit-a-dwarf-planet/index.html#.VPn4fXysWrjIt's in orbit!I would be lying, if i said i wasn't excited most about the bright spots.Seems like it's a bit of a wait still, until we get clearer images, though.It's pretty fucking cool nevertheless"The most recent images received from the spacecraft, taken on March 1 show Ceres as a crescent, mostly in shadow because the spacecraft's trajectory put it on a side of Ceres that faces away from the sun until mid-April. When Dawn emerges from Ceres' dark side, it will deliver ever-sharper images as it spirals to lower orbits around the planet." >> George Hale - Tue, 17 Mar 2015 19:17:32 EST uyuUt0io No.55142 Reply >>55070http://news.sciencemag.org/space/2015/03/scientists-may-have-solved-mystery-dwarf-planet-s-enigmatic-bright-spot?utm_source=facebook&utm_medium=social&utm_campaign=facebookYou seem to be correct, sir!Looks like it's water vapor outgassing. NEAT >> Fred Whipple - Mon, 27 Apr 2015 17:06:39 EST l/7F60uv No.55258 Reply >>55092I think you're defining the word "novel" too strictly. I'd consider any form of cryovolcanism to be novel because the evidence itself is relatively new and much of it is based on indirect observation.
>> Stephen Hawking - Fri, 06 Mar 2015 14:16:37 EST jGLzk50k No.55108 Reply 1425669397799.png -(23663B / 23.11KB, 1000x1000) Thumbnail displayed, click image for full size. http://www.nasa.gov/press/2015/march/nasa-spacecraft-becomes-first-to-orbit-a-dwarf-planet/index.html#.VPn4fXysWrjIt's in orbit!I would be lying, if i said i wasn't excited most about the bright spots.Seems like it's a bit of a wait still, until we get clearer images, though.It's pretty fucking cool nevertheless"The most recent images received from the spacecraft, taken on March 1 show Ceres as a crescent, mostly in shadow because the spacecraft's trajectory put it on a side of Ceres that faces away from the sun until mid-April. When Dawn emerges from Ceres' dark side, it will deliver ever-sharper images as it spirals to lower orbits around the planet."
>> George Hale - Tue, 17 Mar 2015 19:17:32 EST uyuUt0io No.55142 Reply >>55070http://news.sciencemag.org/space/2015/03/scientists-may-have-solved-mystery-dwarf-planet-s-enigmatic-bright-spot?utm_source=facebook&utm_medium=social&utm_campaign=facebookYou seem to be correct, sir!Looks like it's water vapor outgassing. NEAT
>> Fred Whipple - Mon, 27 Apr 2015 17:06:39 EST l/7F60uv No.55258 Reply >>55092I think you're defining the word "novel" too strictly. I'd consider any form of cryovolcanism to be novel because the evidence itself is relatively new and much of it is based on indirect observation.
Astronomy 101 View Thread Reply Hide Allan Sandage - Tue, 10 Mar 2015 16:45:18 EST ng5PGFH1 No.55120 File: 1426020318482.jpg -(119531B / 116.73KB, 847x845) Thumbnail displayed, click image for full size. I need your help, I'm completely clueless.If Hydrogen has a spectral line of 656nm and it is measured in a distant galaxy at 705nm, how would you find the recessional velocity of the galaxy? >> Edmond Halley - Tue, 10 Mar 2015 17:23:02 EST kB08C8qN No.55121 Reply >>55120DeltaLamda/Lambda=v/c >> Edmond Halley - Wed, 11 Mar 2015 18:13:34 EST rjqBmvyM No.55125 Reply Wouldn't you need at least one other line? A given spectrum could be translated as well as stretched/compressed, and a single line wouldn't be able to distinguish those, right? >> Edwin Salpeter - Sat, 14 Mar 2015 10:41:12 EST kB08C8qN No.55130 Reply >>55125Wavelength dependent effects are rare and in the optical almost always destroy the lines. Just treat it all as a velocity, it's the safest bet.
>> Edmond Halley - Tue, 10 Mar 2015 17:23:02 EST kB08C8qN No.55121 Reply >>55120DeltaLamda/Lambda=v/c
>> Edmond Halley - Wed, 11 Mar 2015 18:13:34 EST rjqBmvyM No.55125 Reply Wouldn't you need at least one other line? A given spectrum could be translated as well as stretched/compressed, and a single line wouldn't be able to distinguish those, right?
>> Edwin Salpeter - Sat, 14 Mar 2015 10:41:12 EST kB08C8qN No.55130 Reply >>55125Wavelength dependent effects are rare and in the optical almost always destroy the lines. Just treat it all as a velocity, it's the safest bet.
Size And Age Of Universe Suggests The Existence Of Alien Life View Thread Reply Hide Alium Man - Fri, 06 Mar 2015 11:18:40 EST CLP0/vbo No.55104 File: 1425658720324.jpg -(5752B / 5.62KB, 276x182) Thumbnail displayed, click image for full size. We are not alone in the universe, just because we have not found life on other planets some people seem to doubt the possibility of alien life. I'm just here to tell you we have not even explored 1% of our galaxy for alien life. It's even probable that there are sentient species as advanced or more advanced than our own i this galaxy based upon the age of it. The main ingredients for life (amino acids) are not that uncommon from what we know. How do we know for sure those are not alien spacecraft we see on occasion in our skies? What's your theory on how advanced alien life is? >> Christiaan Huygens - Sat, 07 Mar 2015 18:34:09 EST uyuUt0io No.55113 Reply 1425771249713.jpg -(49299B / 48.14KB, 512x368) Thumbnail displayed, click image for full size. >>55104there's already a space alien thread on page 0, so i'm not gonna bump, but until we find fossils or microbes or something somewhere that isn't Earth, or until somebody talks to us, it isn't 'probable', it's possible. We've literally got a sample size of 1 to look at right now. Kind of impossible to determine probability based on the one single rock in a galaxy with billions and billions of rocks that sprouted life. It's fun to think about, and I'm in the camp that believes there's life out there, but we just can't possibly know it based how very, very little we can observe things not on Earth.Furthermore, 'sentient' life seems like an unbelievably rare occurrence. It's only happened once here. Multicellular life in itself is probably excessively rare if life even exists elsewhere to begin with, animal life even moreso. Rarer still would be a self-aware species. Yet rarer would be self-aware species capable of technological civilization. It's fairly safe to assume quite a few civilizations would end themselves before reaching the stars, and who knows; it might simply be too much time and energy to cross interstellar space for such a species to leave its home planet. UFOs being filled with little green men is silly, though. Remember all those UFO sightings in the American Southwest during the Cold War? How people thought that they had flying saucers holed up in Area 51, and then a bunch of files were declassified and it turned out the Air Force was testing SR71s and shit out there?If space aliens have the technology to efficiently get around and build a galactic civilization, then we're like, an ant colony in New York City to them. So advanced compared to us that we could not possibly comprehend them. I dunno, man. Imagine what people might be like if we manage to maintain a technological civilization for a a thousand, a hundred thousand, one million, five hundred million, even billions of years. Who knows, though, maybe we're lucky number one. The first civilization to emerge in the galaxy. It's not unfeasible, really. Shit, we might even be the first planet to have life. Or maybe life came to Earth from somewhere else. It's hard to say.
>> Christiaan Huygens - Sat, 07 Mar 2015 18:34:09 EST uyuUt0io No.55113 Reply 1425771249713.jpg -(49299B / 48.14KB, 512x368) Thumbnail displayed, click image for full size. >>55104there's already a space alien thread on page 0, so i'm not gonna bump, but until we find fossils or microbes or something somewhere that isn't Earth, or until somebody talks to us, it isn't 'probable', it's possible. We've literally got a sample size of 1 to look at right now. Kind of impossible to determine probability based on the one single rock in a galaxy with billions and billions of rocks that sprouted life. It's fun to think about, and I'm in the camp that believes there's life out there, but we just can't possibly know it based how very, very little we can observe things not on Earth.Furthermore, 'sentient' life seems like an unbelievably rare occurrence. It's only happened once here. Multicellular life in itself is probably excessively rare if life even exists elsewhere to begin with, animal life even moreso. Rarer still would be a self-aware species. Yet rarer would be self-aware species capable of technological civilization. It's fairly safe to assume quite a few civilizations would end themselves before reaching the stars, and who knows; it might simply be too much time and energy to cross interstellar space for such a species to leave its home planet. UFOs being filled with little green men is silly, though. Remember all those UFO sightings in the American Southwest during the Cold War? How people thought that they had flying saucers holed up in Area 51, and then a bunch of files were declassified and it turned out the Air Force was testing SR71s and shit out there?If space aliens have the technology to efficiently get around and build a galactic civilization, then we're like, an ant colony in New York City to them. So advanced compared to us that we could not possibly comprehend them. I dunno, man. Imagine what people might be like if we manage to maintain a technological civilization for a a thousand, a hundred thousand, one million, five hundred million, even billions of years. Who knows, though, maybe we're lucky number one. The first civilization to emerge in the galaxy. It's not unfeasible, really. Shit, we might even be the first planet to have life. Or maybe life came to Earth from somewhere else. It's hard to say.
Greased Darkspeed View Thread Reply Hide Shit Hettingstock - Wed, 04 Feb 2015 18:24:41 EST IhokWyRc No.54990 File: 1423092281534.gif -(620158B / 605.62KB, 402x543) Thumbnail displayed, click image for full size. Slip the what? Dark the who? MY HEAD ASPLODESHUT THE FUCK UP I MADE THE KESSEL RUN IN TWELVE PARSECS SOBSOB SOB >> Bernhard Schmidt - Thu, 05 Feb 2015 19:02:24 EST 3dhJAQX4 No.54996 Reply I always wonder what people who make these sort of threads are like in real life. It fascinates me. >> Caroline Herschel - Mon, 16 Feb 2015 07:15:19 EST ZZdLgro4 No.55041 Reply >>54996>OP>asperger levels above space
>> Bernhard Schmidt - Thu, 05 Feb 2015 19:02:24 EST 3dhJAQX4 No.54996 Reply I always wonder what people who make these sort of threads are like in real life. It fascinates me.
>> Caroline Herschel - Mon, 16 Feb 2015 07:15:19 EST ZZdLgro4 No.55041 Reply >>54996>OP>asperger levels above space
Non-stellar black hole View Thread Reply Hide Alan Guth - Sun, 30 Mar 2014 23:19:17 EST ZhOAg7La No.53409 File: 1396235957344.jpg -(1526332B / 1.46MB, 1728x1224) Thumbnail displayed, click image for full size. OK, odd question but...well marijuana is what...Here we go - Is a non-stellar black hole theorhetically possible?Imagine no restrictions of the creation of it. You have an unlimited supply of dense matter to throw into a big old sphere. Say, I dunno...Iron. Unlimited iron. You can just throw that shit by the teraton into one even pile. I mean, you could create a black hole eventually, right? It would get really fucking hot at first...molten...then maybe some sort of weird plasma? But we keep throwing on the mass. Using special Future Magic to keep shit contained. You get a black hole at some point, right? 21 posts and 2 images omitted. Click View Thread to read. >> Wilhelm Beer - Tue, 10 Feb 2015 13:11:50 EST ZM0jvM6N No.55020 Reply >>55015It's from one of the other papers published by the author. I'm not sure if that's still what she thinks. >> Robert Dicke - Tue, 10 Feb 2015 23:49:27 EST 415JX8nG No.55022 Reply It doesn't matter what element it is made of, it is strictly a measure of total mass. A earth mass of iron would be a planet, a solar mass of iron collapses into a neutron star.Iron nuclei are much more massive than hydrogen and helium, remember the real implications of the periodic table. >> Margaret Burbidge - Fri, 13 Feb 2015 19:53:11 EST 4HbkLal6 No.55030 Reply 1423875191278.gif -(505454B / 493.61KB, 200x200) Thumbnail displayed, click image for full size. >the universe started when a bunch of shit got thrown together
>> Wilhelm Beer - Tue, 10 Feb 2015 13:11:50 EST ZM0jvM6N No.55020 Reply >>55015It's from one of the other papers published by the author. I'm not sure if that's still what she thinks.
>> Robert Dicke - Tue, 10 Feb 2015 23:49:27 EST 415JX8nG No.55022 Reply It doesn't matter what element it is made of, it is strictly a measure of total mass. A earth mass of iron would be a planet, a solar mass of iron collapses into a neutron star.Iron nuclei are much more massive than hydrogen and helium, remember the real implications of the periodic table.
>> Margaret Burbidge - Fri, 13 Feb 2015 19:53:11 EST 4HbkLal6 No.55030 Reply 1423875191278.gif -(505454B / 493.61KB, 200x200) Thumbnail displayed, click image for full size. >the universe started when a bunch of shit got thrown together
