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Kind of a dumb question. by Harlow Shapley - Wed, 18 Feb 2015 05:53:14 EST ID:m296zImB No.55048 Ignore Report Reply Quick Reply
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To live on another planet would the sun and the atmosphere be exactly like earth's? Or could we survive near a red dwarf if the planet was just at the right distance to maintain earthlike temperatures?
41 posts and 9 images omitted. Click Reply to view.
Riccardo Giacconi - Mon, 13 Apr 2015 22:35:38 EST ID:jOF47H5F No.55233 Ignore Report Quick Reply
The end goal is universal supremacy and immortality.
William de Sitter - Tue, 14 Apr 2015 00:32:05 EST ID:XJHlYsmW No.55234 Ignore Report Quick Reply

No. Evolution is not conscious. Evolution is a process. Evolution doesn't necessarily make things "better", it makes things more "adapted" to their present circumstances.
Kip Thorne - Tue, 14 Apr 2015 21:11:17 EST ID:CtuAeZIA No.55237 Ignore Report Quick Reply
Dude, I know this is a drug board, but come on here...
Margaret Burbidge - Tue, 14 Apr 2015 21:32:45 EST ID:YHjXylC8 No.55238 Ignore Report Quick Reply
Are you the guy claiming solipsism, therefore the Egyptians had advanced understanding of the universe in /b/?
Harlow Shapley - Wed, 15 Apr 2015 01:23:31 EST ID:415JX8nG No.55239 Ignore Report Quick Reply
I guess personally I do actually believe there is a formal point of life in the grand scheme, but that's sci fi stuff. I didn't realize it came out so much, but I still stand by it.
There must be natural rules to alien life, universal forms, just like the formation of mountains. If evolution is dictated by the environment, similar environments should create similar life. We are more related to horses than we are to deer, but similar habitats, similar place in the food chain, and similar food sources created similar animals, at least morphologically.

Nourishment in space by Arthur Eddington - Mon, 26 Jan 2015 13:40:12 EST ID:y7G/p//a No.54944 Ignore Report Reply Quick Reply
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We won't be having hamburgers in space.

Or milk or eggs, for that matter. For every cow slaughtered for food there must be an incredible amount of food grown to sustain the cow. In space stations this may not be feasible due to limited space and resources. We'd be better off focusing energy on hydroponics and a vegan diet would probably be necessary in a long term colony or space station.
26 posts and 7 images omitted. Click Reply to view.
Antony Hewish - Tue, 24 Mar 2015 00:13:37 EST ID:4HbkLal6 No.55159 Ignore Report Quick Reply
why cant we engineer spherical cows, that are entirely tenderloin?
Rudolph Minkowski - Mon, 06 Apr 2015 22:19:15 EST ID:OXINl/7g No.55216 Ignore Report Quick Reply
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42 Years at Bernie's - Tue, 07 Apr 2015 04:51:37 EST ID:0FbY93Uu No.55217 Ignore Report Quick Reply
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Sometimes I think Stephen Hawking doesn't even really know anything about space
William Lassell - Tue, 07 Apr 2015 13:08:44 EST ID:vv5qCj4m No.55218 Ignore Report Quick Reply
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As a carnivorous man I have never tasted jizz.
42 Years at Bernie's - Tue, 07 Apr 2015 13:11:18 EST ID:0FbY93Uu No.55219 Ignore Report Quick Reply
Don't dip the pen in the company ink my man
Have a good day

Destroying planets by Paul Goldsmith - Wed, 25 Mar 2015 01:03:03 EST ID:kbd81O3H No.55163 Ignore Report Reply Quick Reply
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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?
1 posts omitted. Click Reply to view.
Clyde Tombaugh - Wed, 25 Mar 2015 16:00:24 EST ID:YHjXylC8 No.55168 Ignore Report Quick Reply
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>why not Jupiter
Because Jupiter is terrifying. Anything that approaches it gains ~134,000 miles per hour. To get away you have to give ~that much back.
To maintain an orbit just above the atmosphere, any craft would be going 90,000 miles per hour relative to the planet itself.
The difference in jupiter's gravitational interaction with the galilean moons' periapsis and apoapsis keeps their cores molten.
The ionizing radiation Jupiter emits constantly ablates the surfaces of its moons, giving the larger ones an atmosphere that's constantly lost to space and maintains a detectable ring of plasma from ionized particles that can't escape.
Maximilian Wolf - Wed, 25 Mar 2015 21:08:40 EST ID:HrEw5VUc No.55169 Ignore Report Quick Reply
>Is it viable to blow up a planet to mine it as with asteroids?

no because you could just mine the planet instead of turning a single planet into millions of projectiles

>Elimination of gravitatory perturbances in an Interplanetary Transport Network?
i imagine transport would be more drastically completed by makes tons of asteroids whose paths are unknown

> just read about asteroid mining and thought about why not Jupiter with all that hydrogen?
we don't need that much hydrogen
Grote Reuber - Fri, 27 Mar 2015 18:04:33 EST ID:CB4800qQ No.55177 Ignore Report Quick Reply
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Too bad Galileo failed to ignite Jupiter.
Galileo Galilei - Sun, 29 Mar 2015 21:49:03 EST ID:jOF47H5F No.55181 Ignore Report Quick Reply
It's never too late.
Rudolph Minkowski - Mon, 06 Apr 2015 22:16:50 EST ID:OXINl/7g No.55215 Ignore Report Quick 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.

I 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 by Kiyotsugu Hirayama - Wed, 18 Mar 2015 14:00:34 EST ID:A1E2ozZS No.55144 Ignore Report Reply Quick Reply
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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.
Annie Cannon - Wed, 18 Mar 2015 18:11:03 EST ID:/FJQtAXr No.55145 Ignore Report Quick Reply

Galileo Galilei - Thu, 19 Mar 2015 19:48:16 EST ID:KlwZpL5U No.55147 Ignore Report Quick Reply
maybe he is European, he cant help it
William de Sitter - Tue, 24 Mar 2015 17:02:07 EST ID:CB4800qQ No.55160 Ignore Report Quick Reply
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I found one of the early motivating factors for the space race.
Joseph Lockyer - Tue, 24 Mar 2015 21:41:19 EST ID:YbQiwQ8y No.55161 Ignore Report Quick 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 ID:d7Dhf0QA No.55211 Ignore Report Quick Reply
Are you laughing at him for using the correct spelling?


black hole the size of 12 billion suns found, debunks all theories of the universe by Urbain Le Verrier - Thu, 26 Feb 2015 19:38:03 EST ID:GFgbSSMF No.55071 Ignore Report Reply Quick Reply
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This article tripped me the fuck out, and scared me a bit. I don't like that something this scary is visible from Earth.
13 posts and 3 images omitted. Click Reply to view.
Charles Messier - Wed, 18 Mar 2015 02:14:57 EST ID:lHGvTKQL No.55143 Ignore Report Quick Reply
Correct, however I must add that we can't perceive 3 dimensions because it requires time to perceive.

And nothing is truly 3 dimensional in this universe because even though an object may look stationary and very rigid, it's molecules are moving and the object is never permanent.

We live in a 4D Spacetime, at least.
Cecelia Payne-Gaposchkin - Thu, 19 Mar 2015 22:41:53 EST ID:JIt5A3UU No.55148 Ignore Report Quick Reply
i got curious and decided to calculate the force of gravity from this bitch. I got 7.85*10^28 Newtons and what the fuck.

This means Earth should be accelerating toward the spot where it once was at 13 km/s.

Or is that not how gravity works? Does this mean gravity is instantaneous? Am I stupid?
Harlow Shapley - Fri, 20 Mar 2015 09:18:57 EST ID:415JX8nG No.55149 Ignore Report Quick Reply
I 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 ID:jScv5urc No.55151 Ignore Report Quick Reply
Your math horribly wrong. I don't think you have calculated the distance correctly.
Urbain Le Verrier - Fri, 20 Mar 2015 23:32:14 EST ID:JIt5A3UU No.55153 Ignore Report Quick Reply

No, 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? by Daniel Kirkwood - Sun, 15 Feb 2015 04:36:13 EST ID:9T8PqMeL No.55035 Ignore Report Reply Quick Reply
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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.
16 posts and 2 images omitted. Click Reply to view.
Chushiro Hayashi - Fri, 06 Mar 2015 12:53:47 EST ID:gRBEStbH No.55106 Ignore Report Quick Reply
Chushiro Hayashi - Fri, 06 Mar 2015 12:55:46 EST ID:gRBEStbH No.55107 Ignore Report Quick Reply
"Anything worth knowing can't be taught. It must be experienced."
Carl Whitaker
Allan Sandage - Fri, 06 Mar 2015 15:36:34 EST ID:Wzs50sSC No.55109 Ignore Report Quick 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 ID:FVrU3tol No.55111 Ignore Report Quick Reply
Throwing that weak mess around here is kind of insulting
Edwin Hubble - Fri, 20 Mar 2015 11:22:01 EST ID:IGgsfW+0 No.55150 Ignore Report Quick Reply

Personally, 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 by Stephen Hawking - Thu, 26 Feb 2015 04:28:40 EST ID:uyuUt0io No.55065 Ignore Report Reply Quick Reply
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Galileo Galilei - Tue, 03 Mar 2015 21:49:22 EST ID:XJHlYsmW No.55092 Ignore Report Quick Reply

Cryovolcanism isn't new, we've seen it on Enceladus and probably on Europa and Titan, too.
Russel Hulse - Wed, 04 Mar 2015 15:49:05 EST ID:jGLzk50k No.55097 Ignore Report Quick Reply
This is pretty fucking neat
Whatever it may be, it looks interesting to the layman like myself

I guess we'll have a better idea on friday (?)
Stephen Hawking - Fri, 06 Mar 2015 14:16:37 EST ID:jGLzk50k No.55108 Ignore Report Quick Reply
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It'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 ID:uyuUt0io No.55142 Ignore Report Quick Reply

You seem to be correct, sir!
Looks like it's water vapor outgassing. NEAT
Fred Whipple - Mon, 27 Apr 2015 17:06:39 EST ID:l/7F60uv No.55258 Ignore Report Quick Reply
I 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 by Allan Sandage - Tue, 10 Mar 2015 16:45:18 EST ID:ng5PGFH1 No.55120 Ignore Report Reply Quick Reply
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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 ID:kB08C8qN No.55121 Ignore Report Quick Reply
Edmond Halley - Wed, 11 Mar 2015 18:13:34 EST ID:rjqBmvyM No.55125 Ignore Report Quick 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 ID:kB08C8qN No.55130 Ignore Report Quick Reply
Wavelength 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 by Alium Man - Fri, 06 Mar 2015 11:18:40 EST ID:CLP0/vbo No.55104 Ignore Report Reply Quick Reply
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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 ID:uyuUt0io No.55113 Ignore Report Quick Reply
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there'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 …
Comment too long. Click here to view the full text.

Greased Darkspeed by Shit Hettingstock - Wed, 04 Feb 2015 18:24:41 EST ID:IhokWyRc No.54990 Ignore Report Reply Quick Reply
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Slip the what? Dark the who? MY HEAD ASPLODE
Bernhard Schmidt - Thu, 05 Feb 2015 19:02:24 EST ID:3dhJAQX4 No.54996 Ignore Report Quick 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 ID:ZZdLgro4 No.55041 Ignore Report Quick Reply
>asperger levels above space

Non-stellar black hole by Alan Guth - Sun, 30 Mar 2014 23:19:17 EST ID:ZhOAg7La No.53409 Ignore Report Reply Quick Reply
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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?
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Arno Penzias - Mon, 09 Feb 2015 11:08:46 EST ID:ZM0jvM6N No.55014 Ignore Report Quick Reply
A nova isn't the same thing as a supernova which involve black holes.

The paper claims it will not impact observations as you get something that is for all practical purposes a black hole. This is a debate for theorists and many have pointed to a number of grand assumptions made on the paper.
Johannes Kepler - Mon, 09 Feb 2015 12:59:51 EST ID:YHjXylC8 No.55015 Ignore Report Quick Reply
>you get something that is for all practical purposes a black hole
Where are you reading that? As far as I can tell, it's effectively saying "When we do calculations this way, it says the collapse reverses before the is compressed beyond its Schwarzschild radius, causing everything to explode away."
Wilhelm Beer - Tue, 10 Feb 2015 13:11:50 EST ID:ZM0jvM6N No.55020 Ignore Report Quick Reply
It'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 ID:415JX8nG No.55022 Ignore Report Quick 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 ID:4HbkLal6 No.55030 Ignore Report Quick Reply
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>the universe started when a bunch of shit got thrown together

If instead of astronomy, young Carl had instead become interested in the culinary arts. by Riccardo Giacconi - Sun, 08 Feb 2015 12:18:46 EST ID:ZmBRgB9c No.55007 Ignore Report Reply Quick Reply
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Friedrich Bessel - Sun, 08 Feb 2015 12:59:17 EST ID:4HbkLal6 No.55008 Ignore Report Quick Reply
Apple Pie, vol. 84930
Wilhelm Beer - Sun, 08 Feb 2015 18:43:00 EST ID:KCC23SOp No.55009 Ignore Report Quick Reply

Meat Planet!!!
Whitey Fanwater - Sun, 08 Feb 2015 18:50:39 EST ID:3I5fR38C No.55010 Ignore Report Quick Reply
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food would be so much more delicious

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