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We're recovering from a major server loss and are restoring backups as we gain access to them. Don't mind the odd time warp. Warn us in the future.

Time dilation and the Alcubierre drive by Johann Bode - Thu, 30 Jul 2015 12:30:55 EST ID:/fL15l2I No.55567 Ignore Report Reply Quick Reply
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if one were traveling above c in a ship using an Alcubierre drive, would they experience time dilation?
as i understand it, the object affected by the drive isn't moving but rather space is simply expanding and contracting around it. the object has no velocity and isn't moving in the normal sense.
Karl Swarzchild - Thu, 30 Jul 2015 13:05:05 EST ID:lHGvTKQL No.55568 Ignore Report Quick Reply
No, because the entire ship is contained within it's own stationary spacetime bubble.

The negative time generated by dilation will only speed up the journey relatively to the speed of light.

Stephen Hawking - Aliens by Georges-Henri Lemaitre - Wed, 22 Jul 2015 09:52:58 EST ID:eZ452btZ No.55537 Ignore Report Reply Quick Reply
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5 posts and 3 images omitted. Click Reply to view.
Georges-Henri Lemaitre - Wed, 22 Jul 2015 13:52:27 EST ID:eZ452btZ No.55543 Ignore Report Quick Reply
1437587547193.png -(2077684B / 1.98MB, 1920x1080) Thumbnail displayed, click image for full size.
The universe is freaking me the fuck out, man.

If aliens was ahead of us in technology then they would surely know we are here? Just like we know there are biologicaly inhabitable planets out there.

>wouldn't have had time to make the journey.
Depends on how far they are from us, right? I guess it's like with stars and us: the stars we observe every night are already dead.

>We haven't been broadcasting evidence of intelligent life for even a century.
We wouldn't need to if aliens are as intelligent as we make them out to be.
Johann Bode - Wed, 22 Jul 2015 13:59:24 EST ID:415JX8nG No.55544 Ignore Report Quick Reply
I think aliens might just be too different and advanced for us to even recognize as life and they might be able to travel around so fluidly through the universe that it's not that they are visiting us because we are such fascinating creatures, they are visiting here because they go around everywhere all the time anyways, I'm sure they spend time on Jupiter too

A crack pot idea I was thought of last night is this: There's some good reasoning out there that the universe exists as described by a model of the holographic principal, there have also been some recent papers that suggest the phenomenon of volume and orderliness in space is created through entanglement of information on the holographic cosmic horizon that we are all smeared across.

My idea is that aliens have some sort of super quantum computer (or something beyond that) that can decode all of cosmos and they are able to somehow alter the entanglement states in order to manipulate the properties of volume. I bet they can create black holes like it's nothing.
But I think that would explain the behavior of UFOs, from how they seem to morph shape, and split apart and reform. They are so hard for people to describe because they are taking quantum phenomenon and blowing it up to real world levels. I think when a UFO "explodes" without leaving a trace, it's just some inherent collapse of the system of altercations to the holographic horizon normalizing itself.

Granted that's all assuming UFO reports are even accurate, but like I said, crack pot, it's just fun to think about even if it's not real.
Alan Guth - Wed, 22 Jul 2015 16:29:07 EST ID:YHjXylC8 No.55545 Ignore Report Quick Reply
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>the stars we observe every night are already dead.
Unless you're using a telescope to look at galaxies very far away, they're all within a hundred thousand light years and probably aren't dead.

Pic related is a much better explanation for UFOs.
Johann Bode - Wed, 22 Jul 2015 17:08:26 EST ID:415JX8nG No.55547 Ignore Report Quick Reply
Hahaha that's awesome.
It would be an interesting statistic to see how the numbers change from populations with lots of alien cultural references to others were it's less prevalent, and how it changes with the scientific education levels of the respective populations effect the out come as well.

I've seen one ufo, it was probably a meteor, about twice the size of the full moon, comparable color and brightness, but it didn't have a tail and it flew right over me. I've seen large (good fraction of the full moon size) meteors before, and the big ones still had tails, but maybe it was a simple perspective issue, as the ones I saw with tails were all on the horizon. It still scared me though and I'm a super tough guy whose not afraid of anything
Intelligent life? Here? You must be kidding !8NBuQ4l6uQ - Fri, 24 Jul 2015 22:43:50 EST ID:oIw5gxix No.55559 Ignore Report Quick Reply

MFW by Joseph von Fraunhofer - Thu, 16 Jul 2015 05:52:22 EST ID:LD9WXxz6 No.55518 Ignore Report Reply Quick Reply
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I realize we will never set it for ourselves.
6 posts omitted. Click Reply to view.
Daniel Kirkwood - Tue, 21 Jul 2015 04:31:03 EST ID:oRPxFShw No.55533 Ignore Report Quick Reply
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Heinrich Olbers - Tue, 21 Jul 2015 15:47:58 EST ID:301QhKfM No.55534 Ignore Report Quick Reply
iirc a lot of those photos are long exposures and that if you were to look with your fleshy man-eyes these things wouldn't be nearly so exciting to look at
Alan Guth - Wed, 22 Jul 2015 08:35:39 EST ID:YHjXylC8 No.55536 Ignore Report Quick Reply
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Yeah, but we're really far away too. If we were closer (and blocked out light from other sources, we see dim objects near very bright objects by covering up the bright object), some structures would be brighter, to an extent.
But nebulae are so big and diffuse they've be invisible up close. The face of OP's unicorn is about a light year long.

The IAU currently does not recognize space-unicorn as an alternative to light-year.
William Huggins - Wed, 22 Jul 2015 16:49:15 EST ID:rIYomINL No.55546 Ignore Report Quick Reply
That doesn't mean they aren't real or aren't visible light.
Irwin Shapiro - Thu, 23 Jul 2015 00:48:39 EST ID:OXINl/7g No.55549 Ignore Report Quick Reply
They're definitely *real*, but they're not as visible as the photos make them appear. Most of those awesome nebula photos are long exposures, yes, but they're also composites of infrared, x-ray, and visible light, with some coloration and hue/contrast added to make them "pop." It's a real thing in the photo, but it's not the "natural" way it looks.

the sun has fallen down by Kiyotsugu Hirayama - Tue, 16 Jun 2015 22:13:13 EST ID:fhuRENSe No.55412 Ignore Report Reply Quick Reply
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what would happen to the earth and the rest of the pack in the system if suddenly the sun dissapeared? how quickly would the planet freeze?
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Jan Hendrik Oort - Wed, 17 Jun 2015 17:21:19 EST ID:YHjXylC8 No.55417 Ignore Report Quick Reply
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This is a volcanic vent in Antarctica. The area around it is not habitable. The planet will become colder than that.

Geothermal and nuclear plants are the only methods of any scale that could be run for years if there was a catastrophe.
If there were enough proximity, farms could be set up in underground salt mines to last a few years.
Ultimately, nuclear and geothermal are the only power sources that aren't derived from our sun.
Harlow Shapley - Sat, 20 Jun 2015 05:45:05 EST ID:X6E5uhNi No.55429 Ignore Report Quick Reply
Urbain Le Verrier - Mon, 22 Jun 2015 18:01:16 EST ID:4qq7TOTM No.55437 Ignore Report Quick Reply
thanks to this video I found this short speculative fiction gem:
Thomas Gold - Wed, 15 Jul 2015 23:13:49 EST ID:415JX8nG No.55517 Ignore Report Quick Reply
If my imagination is allowed to run wild, I would put the earth in orbit around Jupiter, close enough to cause a decent amount of geologic activity and keep some sort of an atmosphere, even if it's toxic and much less dense than ours is today.

The center piece of civilization would probably be fusion/fission nuclear reactors, we could mine hydrogen from Jupiter. But we would need manufacturing hubs, mines, and genetically modified plants in vertical farms. I think it might be best to put residential areas around hydrothermal vents. But the other stuff will probably need to be above ground
Johan Galle - Sun, 19 Jul 2015 19:34:02 EST ID:BF8zYeiD No.55530 Ignore Report Quick Reply
I love that story. So cool.

Gentlemen... by John Bahcall - Tue, 14 Jul 2015 22:24:03 EST ID:lHGvTKQL No.55511 Ignore Report Reply Quick Reply
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The mission was a success.

We have a picture of Pluto now.
3 posts and 2 images omitted. Click Reply to view.
Thomas Gold - Wed, 15 Jul 2015 22:47:07 EST ID:415JX8nG No.55516 Ignore Report Quick Reply
I'm still not used to actually knowing what Pluto looks like.
It's still kind of an abstraction to me
Edward Barnard - Thu, 16 Jul 2015 15:33:01 EST ID:UYhc/BJi No.55519 Ignore Report Quick Reply
It is beautiful!!
Infinitely more than I ever could imagine it would be!
Pierre-Simon Laplace - Fri, 17 Jul 2015 14:53:48 EST ID:P+fSJ1RL No.55520 Ignore Report Quick Reply
I love that they call it Mordor. It so perfectly marks the time table of our exploration beyond our world. All planets in our system maintain old Latin names of old gods and deities. Now one holds a name from almost 100 years ago and has a region photographed and named Mordor.

Wonder if we find any other sneaky moons around the Jovians what will the names be?
Pierre-Simon Laplace - Fri, 17 Jul 2015 14:55:42 EST ID:P+fSJ1RL No.55521 Ignore Report Quick Reply
derp charon has mordor and was discovered only just back in 78. Didn't mordor exist in tolkiens books by then? What ever still impressed by the difference in names in system based on time discovered. nb
Alan Guth - Fri, 17 Jul 2015 20:19:27 EST ID:okoywjgZ No.55524 Ignore Report Quick Reply
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I hope it becomes official some day, it also fits the underworld theme the IAU wants

Here's a map of Pluto with names suggested by NASA

Star pussy by Henry Draper - Tue, 14 Jul 2015 12:22:51 EST ID:euFuFwSC No.55507 Ignore Report Reply Quick Reply
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Venus and Jupiter June 2015 by Rudolph Minkowski - Sun, 21 Jun 2015 23:01:02 EST ID:Mx4j4tsI No.55436 Ignore Report Reply Quick Reply
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The best view in northern hemisphere for June, and not ONE thread about it?
Where are all my Venus and Jupiter observers at?
13 posts and 7 images omitted. Click Reply to view.
Viktor Ambartsumian - Fri, 26 Jun 2015 23:50:37 EST ID:jOF47H5F No.55459 Ignore Report Quick Reply
>But without the new model actually fitting the available data, the theory is as useful as the polemic model.

It was Kepler's vision of God communicating with mankind on a cosmic level, via recognizable geometric shapes, that incessantly drove him towards the pursuit of knowledge. He struggled through war and personal strife to get the data, not because he wanted to prove elliptical orbits (that part was incidental), but because he wanted to prove that his starry-eyed dream of a physical connection to the spiritual realm was true.

>When Greek philosophers said "lol if we divide something enough, surely we'd get to a point where we couldn't divide it anymore",

It was their way of estimating the area within complex shapes and it worked well enough for that purpose, unlike anything before. It worked so well, the Chinese reinvented it hundreds of years after the Greeks did.

People really screwed up when they made the assumption that the ancient Greeks knew all the answers, and any questions about the metaphysical weren't to be tolerated if they didn't conform to the religious teachings of the time. (seeing a pattern yet)

>"what if the universe is a high-dimensional object constantly rotating within itself" doesn't make any testable predictions, explain any data, etc.

But it might make people take the same data that's in front of all of us and see it in a new light. And as history has repeatedly shown, they might even stumble upon a world-shattering discovery in the process, which happens to hold true in reality.
Kiyotsugu Hirayama - Sun, 28 Jun 2015 14:57:09 EST ID:L3OB90Tk No.55464 Ignore Report Quick Reply
>-Cosmic Inflation: What the fuck drives the expansion of the universe, and why is everything flying away from us? Is it just an observers bias that has been unnoted?

You're confusing a few things there. Inflation is not the expansion of the universe, it was a very rapid stage of expansion in the very early universe which ended shortly after. What drives the expansion of the universe is like momentum, it was expanding so continues to now. What drives it's accelerating is a different question loosely dubbed dark energy which is really a name for any model which sets to explain it.

>He struggled through war and personal strife to get the data

He stole his data from Tycho. It think you're getting carried away with artistic licence.
Chushiro Hayashi - Sun, 28 Jun 2015 17:16:18 EST ID:jOF47H5F No.55465 Ignore Report Quick Reply
>He stole his data from Tycho.

In the end that's ultimately what he had to do, but you're conveniently disregarding everything he went through up until that point. Maybe you should read up about the man some time.
Karl Jansky - Fri, 03 Jul 2015 18:44:29 EST ID:0TqljQT/ No.55467 Ignore Report Quick Reply
No. He didn't have to do anything, he chose to. Just as you chose to neglect the fact his data was stolen and accuse me of ignoring history. Pot? Black?
Personal difficulty does not change the facts, Kepler was brilliant but the data was stolen.

And no the sentence "the universe is a high-dimensional object constantly rotating within itself" isn't going to cause anyone to stumble onto some new cosmology, it's so vague it doesn't many anything, it's technobabble.
Tadashi Nakajima - Thu, 06 Apr 2017 14:34:06 EST ID:S0k+HZwt No.56907 Ignore Report Quick Reply

Yes, some things you morally HAVE to do(would you watch your significant other (or self) be tortured over and over again, while unbound and free with a cell phone? No you'd be compelled to do something different, or your guilty of doing nothing when a huge injustice is being done(injustice is an open ended term I know) and you can do something about it... Or guilty of being a sadist/masochist.

The shape of Galaxies. by Nicolaus Copernicus - Sun, 14 Jun 2015 00:27:54 EST ID:kfQx+w9j No.55402 Ignore Report Reply Quick Reply
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So if I'm correct, every galaxy has a supermassive black hole at the center of it. Every galaxy was once an active Quasar and then cooled after the black hole at the center of the galaxy spewed and consumed all the matter around it. So if a black hole has angular momentum at the center of a galaxy, does that mean the galaxy would result in a spiral shape? And would non rotating black holes instead form more of an irregular galaxy shape? I'm thinking in terms of galaxy evolution and the various shapes different galaxies take. Cheers.
9 posts and 4 images omitted. Click Reply to view.
William Huggins - Fri, 26 Jun 2015 22:06:49 EST ID:LmQ6qdUZ No.55458 Ignore Report Quick Reply
All about spirals:
Charles Bolton - Sun, 28 Jun 2015 01:39:16 EST ID:P+fSJ1RL No.55460 Ignore Report Quick Reply
That fucking pic. I always knew the galaxyy was huge. Had no real concept until I started playing elite dangerous, the playable world contains the estimated 400 billion stars of the milky way. Viewing the map is an awe inspiring and simultaniously crushing experience. Now I see this fuckin pic.

Why do we still live on one planet?
Roger Penrose - Sun, 28 Jun 2015 09:38:23 EST ID:IQY0YtFB No.55461 Ignore Report Quick Reply
Eventually the spiral forms take shape of malicious code and Avira antivirus will detect them as false positives, You should try a Linux Distro, OP.
Just sayin'
Henry Draper - Sun, 28 Jun 2015 13:23:21 EST ID:XJHlYsmW No.55462 Ignore Report Quick Reply

Space is big and also hard.
Kiyotsugu Hirayama - Sun, 28 Jun 2015 14:38:04 EST ID:L3OB90Tk No.55463 Ignore Report Quick Reply

You're both sort of right. Before major mergers when galaxies shave a lot of gas and are actively forming stars most of the big ones are spirals, some of the small ones can be irregular bit that's a different story. Left to it's on devices a spiral will not evolve or normalise into an elliptical.

A major merger is when two roughly equally sized galaxies collide and merger. It is believed elliptical form major mergers of spirals. As part of this merger the gas is usually stripped out and star formation shuts down with nothing to make stars out of (After the merger is finished). When it reaches a steady state it will be an elliptical, it will not evolve back into a spiral. The reason ellipticals have older stars is because they don't form any new ones, the oldest stars in each galaxy will not be significantly older or younger than the other.


Frame dragging is a tiny effect, it doesn't affect things like that.

Aw Shit by Giovanni Cassini - Wed, 17 Jun 2015 17:51:11 EST ID:KlwZpL5U No.55418 Ignore Report Reply Quick Reply
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I just started work at MIT, working on the Transiting Exoplanet Survey Satellite [TESS] program. Ask me stuff about space & shit, I can answer it for you.
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Jan Hendrik Oort - Wed, 17 Jun 2015 22:38:24 EST ID:XJHlYsmW No.55424 Ignore Report Quick Reply
Any idea when the launch date is?
Jan Hendrik Oort - Wed, 17 Jun 2015 22:45:49 EST ID:XJHlYsmW No.55425 Ignore Report Quick Reply

Whoops, missed your earlier post.
Fred Hoyle - Fri, 19 Jun 2015 06:44:57 EST ID:YHjXylC8 No.55426 Ignore Report Quick Reply
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Do you feel the current method of detecting planets in the habitable zone is exhaustive enough to extrapolate an upper bound on how frequently rocky planets where water exists in all three phases occur, at least for certain classes of stars?

Also, did you get a cool mission patch?
William Herschel - Fri, 19 Jun 2015 22:26:23 EST ID:KlwZpL5U No.55427 Ignore Report Quick Reply
Good question!
This mission is designed to find candidate star systems for follow up observation by more sophisticated telescopes, like the JWST or GMT. What this means is that our mission is to simply characterize and catalogue as many candidate systems as possible. After speaking with a professor on the program yesterday, he explained that simulations of one year of operation showed a potential catologue of up to 75 earth mass exoplanets, up to 150 between earth and Neptune mass, and more in the Jupiter size class.
However, These candidates are going to be in orbit around the best candidate stars for water to exist, namely red dwarfs and smaller main sequence stars. It is hard to say which ones could have all three phases. At least what TESS can tell you is the mass, period, and a brief sniff of the atmosphere (if you subtract the star spectra before a transit from the spectra during a transit, you get a vague idea of the atmosphere composition).

Alas I have not gotten my patch yet. I'm hoping to score a TESS patch and a CHANDRA patch, cause that's' another one of our missions.
William Herschel - Fri, 19 Jun 2015 22:27:25 EST ID:KlwZpL5U No.55428 Ignore Report Quick Reply
I'm also on my phone, so, sorry for the wall of text with no format.

HYPOTHETICALLY SPEAKING by Caroline Herschel - Sun, 01 Jun 2014 00:36:25 EST ID:VdooM9pB No.53894 Ignore Report Reply Quick Reply
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What do you think would happen if highly intelligent, stronger, more powerful aliens made contact with earth right now and told us the meaning of life.
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Edwin Salpeter - Fri, 03 Oct 2014 04:19:18 EST ID:SknUZfy5 No.54465 Ignore Report Quick Reply
Interesting point. Baruch Spinoza talks about this a little bit
Bombastus !!HToBa9dh - Tue, 02 Jun 2015 23:20:47 EST ID:v/Qs9FSo No.55380 Ignore Report Quick Reply
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Read Slaughterhouse Five.
Then go watch "Absolution" with Steven Seagal.

One will give you the meaning of life. And one will make you realise it's not worth it.
Friedrich Bessel - Wed, 03 Jun 2015 01:40:52 EST ID:/Tm3UOch No.55381 Ignore Report Quick Reply
We'd reject that, obviously.
Our meanings are superior anyway.
Russel Hulse - Thu, 04 Jun 2015 21:57:03 EST ID:415JX8nG No.55382 Ignore Report Quick Reply
The meaning of life is subjective.
The meaning of our lives to aliens could be rather demeaning to our sense of ourselves and I doubt aliens are going to tell us we are to rule the universe or whatever.
I think life has a general role to play in the future of the universe, as it is a natural byproduct of the Big Bang, but I don't think that would even manifest itself through mere biologic organisms. I think a mastery of quantum technologies will have a dramatic effect on the biology/physiology/psychology of humans.
We're still apes, smart apes for sure, I might even argue that we're great apes, but still just apes
Joseph Taylor Jr. - Sat, 06 Jun 2015 22:21:11 EST ID:9Jg5Dok5 No.55389 Ignore Report Quick Reply
Who knows? Lulu Amelu have been created by gods from apes to be their slaves, but they rebelled and evolved

and we may evolve further. or embrace our half-ape nature and be forever as we are now. that is meaning, too.

BOINC by INTERPOL !3mB4iDBpWw - Sun, 24 May 2015 00:38:44 EST ID:kiOQuM9F No.55362 Report Reply Quick Reply
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Hey all

I just got a new video card and decided to fire up the old BOINC to see how it stacks up to the old ones I had. At the zenith of my BOINC days I had x2 5970's doing 4 workunits, one for each GPU, every 1:30-2:00 minutes each. This 7990 that I just got is doing 2 workunits in 12 seconds for the easy ones and 30 seconds for the longer ones, but they have them mixed in with each other. So in the time it took to draw a 3d map of the cosmos in one unit for my old setup if I only counted one card, my new one is doing the work of just over 4 of my old cards in the same amount of time.

Is there still any interest in this now that Bitcoin shit the bed finally? We can start using our unused CPU and GPU cycles again for science if you want to join the team, we have teams for most of the major projects, Rosetta, Milkyway, Primegrid, etc.
George Gamow - Tue, 26 May 2015 09:03:53 EST ID:0IM2ydyR No.55370 Ignore Report Quick Reply
I should stop being lazy and get into this now that you've reminded me.
INTERPOL !3mB4iDBpWw - Wed, 27 May 2015 23:09:31 EST ID:kiOQuM9F No.55373 Report Quick Reply

2 days plugging away at it on and off (not even really trying), I'm already in the top 300 out of nearly 3 and a half million people in recent credit.
Edwin Salpeter - Mon, 01 Jun 2015 21:31:35 EST ID:lHGvTKQL No.55378 Ignore Report Quick Reply
Cool beans, interpol.

I like to say "boinc" and I like what they're trying to do but my graphics cards sucks balls, so keep up the good work!

The coldest spot in the known universe by Mike Brown - Thu, 06 Feb 2014 17:29:09 EST ID:KfBom9VV No.52948 Ignore Report Reply Quick Reply
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>NASA researchers are planning to create the coldest spot in the known universe inside the International Space Station.

>Researchers like Thompson think of the Cold Atom Lab as a doorway into the quantum world. Could the door swing both ways? If the temperature drops low enough, "we'll be able to assemble atomic wave packets as wide as a human hair—that is, big enough for the human eye to see." A creature of quantum physics will have entered the macroscopic world.
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Jacob Kapteyn - Mon, 11 May 2015 12:14:24 EST ID:1K+dACgX No.55307 Ignore Report Quick Reply
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100 PK is their target. I think that the previous experiment proved one could reach that temperature. This experiment is intended to test what would happen at that temperature. Those are different objectives.
Tycho Brahe - Thu, 14 May 2015 18:36:20 EST ID:w6CPIdmV No.55319 Ignore Report Quick Reply
That pic is screwed. The pieces in Chinese Chess are placed on the intersections of the lines, not inside the squares. nb
Cecelia Payne-Gaposchkin - Mon, 18 May 2015 20:13:18 EST ID:1K+dACgX No.55325 Ignore Report Quick Reply
Western audiences wouldn't get the reference using any other board, but the philosophy behind ancient Chinese chess aphorisms remains, hence the disconnect between what is seen and what is heard.
Heinrich Olbers - Tue, 26 May 2015 22:01:17 EST ID:3/OhnWkk No.55371 Ignore Report Quick Reply
No guys, it's my fucking ex girlfriends heart.
Walter Baade - Wed, 27 May 2015 22:59:37 EST ID:jOF47H5F No.55372 Ignore Report Quick Reply

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