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sonic booms collide by James van Allen - Mon, 01 Dec 2014 04:15:48 EST ID:BvXkbDPl No.54742 Ignore Report Reply Quick Reply
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what would it be if two sonic booms "collided" into each other?
11 posts and 2 images omitted. Click Reply to view.
Fred Hoyle - Wed, 25 Feb 2015 02:35:35 EST ID:t1vMK9Uc No.55062 Ignore Report Quick Reply
You could sequence break from the first stage into the credits then
Georges-Henri Lemaitre - Wed, 25 Feb 2015 21:48:16 EST ID:sky71Ye7 No.55063 Ignore Report Quick Reply
Depending on the waveforms they would either cancel each other out, or merge into one hell of a sonic which in turn would please all autists of this world.
George Airy - Fri, 20 Mar 2015 22:45:49 EST ID:a5zMFg9h No.55152 Ignore Report Quick Reply
Consider what a sonic boom actually is: a pressure wave.
Matter waves pass through one another unaffected.
Subramanyan Chandrasekhar - Sun, 12 Apr 2015 17:33:31 EST ID:A9+znK2f No.55226 Ignore Report Quick Reply
a sonic boom colliding is redundant because a sonic boom is all ready the over stacking of sonic waves, isn't it?
Riccardo Giacconi - Tue, 05 May 2015 23:56:06 EST ID:9S1uGKA/ No.55278 Ignore Report Quick Reply

But what if two jet planes traveling mach 1+ pass by each other, would the two groups of stacking sonic waves even interact with each other? or like the other guy said and pass through each other.

I for one, hope that they would create a MEGA boom.

the flow chart would be as such
super->mega->ultra->SHIT NIGGA YOU CRAZY

Theories on black holes/universe by Walter Baade - Sun, 12 Apr 2015 08:39:25 EST ID:g7PRBuUF No.55225 Ignore Report Reply Quick Reply
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What are some curious theories on what this all is? Existence in the universe is mind blowing when I sit down and think of what we are really a part of. What are your own theories about what we call 'space' is? Like, what's going on from a bigger perspective? Or smaller?
4 posts and 2 images omitted. Click Reply to view.
Jan Hendrik Oort - Fri, 17 Apr 2015 23:41:54 EST ID:mbKbCBAF No.55246 Ignore Report Quick Reply
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OP here. very cool thoughts you all have. I am comforted by most of these ideas. I have changed once or twice in my life in such a way that upon looking back at my old life, I could only call it a dream of another perspective. I try to apply that feeling to the universe. I can hold onto my ego, or I can let go and be filled with whatever is right here and flow. Ceaseless action, ceaseless eternity, ceaseless vibration. Change.
Giuseppe Piazzi - Sun, 19 Apr 2015 03:03:45 EST ID:lHGvTKQL No.55247 Ignore Report Quick Reply
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Here's my theory in a nutshell.

The universe is a high-dimensional object constantly rotating within itself.

A complete rotation takes the duration of the life of every universe in existence (current evidence only supporting one), with the big bang being the start of a new rotation. Matter and energy are the result of fluctuations within the universe as it rotates, physical laws are descriptions of how it rotates. Time restarts with each rotation, rotations end and restart after the heat death.
Daniel Kirkwood - Sun, 19 Apr 2015 10:11:48 EST ID:kJab1AwD No.55248 Ignore Report Quick Reply
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Alan Guth - Thu, 30 Apr 2015 11:32:10 EST ID:9uY/b809 No.55262 Ignore Report Quick Reply
Am I the only one who thinks we are in the cosmic space turtles dream? Fuck.
Clyde Tombaugh - Mon, 04 May 2015 10:53:18 EST ID:6YVGyMb+ No.55275 Ignore Report Quick Reply
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I made up a story for school. Where the universe is a gaint being thats further then the 4th dimension and we live like microbes inside of it and only scens this being in a 3th dimensional way . But its on a scale so big we cant understand further than intended,just like microbes we just live our purpose but cant visualise the being where in. And black holes are like a chemo killing microbes or problems that harm the universe.

End of the universe by Thomas Henderson - Thu, 30 Apr 2015 21:22:45 EST ID:ZJgVev/f No.55263 Ignore Report Reply Quick Reply
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I know science doesn't care about our feelings, but tell me of any alternate theories other than everything freezing to death or being ripped to shreds that allows something, anything to keep on going and surviving.

Can we eventually develop the technology that allows us to "jump" to a new, younger or possibly truly unending universe with different laws of thermodynamics to carry ourselves on?

Hold me, /sagan/.
1 posts omitted. Click Reply to view.
Johannes Kepler - Fri, 01 May 2015 00:33:40 EST ID:Sa5XPNCk No.55265 Ignore Report Quick Reply
You should take comfort in the fact that you as an individual will die long before any of these things come to pass! So ultimately in the story of Thomas Henderson none of these horrible fates will come to pass, because you will be super duper long dead.
Jericho !.iRAtomic2 - Sat, 02 May 2015 03:26:30 EST ID:maTIq9B/ No.55267 Report Quick Reply
In his late 90s book Hyperspace, Michio Kaku mentions (vaguely and briefly) the possibility that our universe is split between a 4/6D pair of universes contained within the larger 10D universe, and that by the time heat death occurs (or a Big Crunch) occurs, any surviving society might be sufficiently advanced to harness the power of the collapsing universe and create a wormhole into the other one.

The biggest problem is the sheer amount of energy it takes. Mind bogglingly vast, and likely to be near impossible to control.
Russel Hulse - Sat, 02 May 2015 08:14:19 EST ID:q5dc4YUL No.55269 Ignore Report Quick Reply
>Michio Kaku
God I hate that guy
Charles Messier - Sat, 02 May 2015 20:39:07 EST ID:6TbPsH2/ No.55271 Ignore Report Quick Reply
The fact that anything exists at all is pretty much the biggest - well, it's technically the only problem in science.
Yeah, some scientists say things like "nothingness is unstable" and that may well be true. But if we can't figure out how nothing can turn into something - and why it turned into quarks, atoms, stars, planets, galaxies instead of something entirely different - there's no way we can say what will eventually happen.

But whether we're made out vibrating strings or just condensed balls of energy the only thing you need to know is,
William Lassell - Sun, 03 May 2015 23:39:59 EST ID:3SVtd7YR No.55273 Ignore Report Quick Reply
maybe the collapse of the underlying universe can cause such things,

Don't believe the hype. by Mike Brown - Fri, 01 May 2015 21:46:57 EST ID:4GGSsMJY No.55266 Ignore Report Reply Quick Reply
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My roommates are misinformation masters and even though I know you guys are smarter than this, but they are crafting a masterful troll work about how the ISS is damaged beyond repair. Look for it online. Lives lost money lost. Death on parade. Thy are some fucking idiots.
Bernhard Schmidt - Sat, 02 May 2015 03:53:51 EST ID:lHGvTKQL No.55268 Ignore Report Quick Reply
Thanks for the heads up but I gotta say the ISS is lame as shit, we can do better than that.

How about a spinning ring station tidally locked between our moon and the earth?
Urbain Le Verrier - Sat, 02 May 2015 13:06:30 EST ID:XJHlYsmW No.55270 Ignore Report Quick Reply
No, ISS is fine.

There was however an ISS-bound Progress cargo ship that got damaged on the way up somehow and is tumbling uncontrollably. That may be what they're thinking of.
Subramanyan Chandrasekhar - Sat, 02 May 2015 22:34:50 EST ID:ihYE5feE No.55272 Ignore Report Quick Reply
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yeah, that would be way better.

I think ISS is situated so that they can ditch it if they want to stop paying for it though.
the ring station would probably stay up a lot longer.

but to be fair it is the most expensive object ever created by mankind and arguably one of our greatest acheivements.

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.

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