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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
File: 1423415926683.jpg -(61262B / 59.83KB, 315x476) Thumbnail displayed, click image for full size. 61262
DICKS EVERYWHERE
>>
Friedrich Bessel - Sun, 08 Feb 2015 12:59:17 EST ID:4HbkLal6 No.55008 Ignore Report Quick Reply
>>55007
Apple Pie, vol. 84930
>>
Wilhelm Beer - Sun, 08 Feb 2015 18:43:00 EST ID:KCC23SOp No.55009 Ignore Report Quick Reply
http://youtu.be/ZP7K9SycELA

Meat Planet!!!
>>
Whitey Fanwater - Sun, 08 Feb 2015 18:50:39 EST ID:3I5fR38C No.55010 Ignore Report Quick Reply
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>>55007
food would be so much more delicious


Celestron 127EQ by Edwin Hubble - Sun, 04 Jan 2015 18:14:07 EST ID:1FsPM3Cw No.54891 Ignore Report Reply Quick Reply
File: 1420413247281.jpg -(101670B / 99.29KB, 1200x720) Thumbnail displayed, click image for full size. 101670
I'm gonna start this thread out by saying, this is one of the most appropriately named boards on the web. With that being said, I have had a life long passion for astronomy for 30 years now and I have finally acquired a really good telescope. The Celestron 127EQ is the scope I have (got it last month for my birthday) and it seems to be a rather good investment for a beginner. I do have some troubles though. I got the telescope put together without trouble, but I have trouble with coordinates and with the adjusting of it. I can of course move it around and swivel it, but sometimes it doesn't want to lock into position. If any of you could give me some tips and advice it would be much appreciated. I just really want to get the hang of this hobby so I can begin photographing, the telescope comes with a mount for a camera. Anyway, pic related, this is it.
>>
Henry Russell - Sun, 04 Jan 2015 18:41:21 EST ID:ksAXy5yQ No.54892 Ignore Report Quick Reply
>>54891
I'd say that you need to consult the user manual more closely.

I'm not trying to be a punk but why would random people know how a certain model of telescope works? There's billions and billions of them.

I guess I could suggest tightening all the knobs better but without actually touching the telescope, my guess is as good as yours.
>>
Nicolaus Copernicus - Tue, 13 Jan 2015 02:51:48 EST ID:Dnv5U1Ks No.54905 Ignore Report Quick Reply
Is that pic related? It looks 8"

Invest in a bigger one if you can. You will be glad you did.

nb cuz not helpful
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Hannes Alven - Mon, 02 Feb 2015 09:59:16 EST ID:SiTp3J4K No.54983 Ignore Report Quick Reply
just put one of these on it and then point the scope at cool stuff in the sky and look at it through the eye piece

you might want a different mount for it if yours is slipping. it doesn't look like a very good mount...you probably won't be taking many astro photos with it. i have a similar scope on this tripod with steel legs for ultra stability, it's pretty good! - http://www.telescopesandbinoculars.co.uk/acatalog/AZ4-HEAVY-DUTY-ALT-AZIMUTH-MOUNT---TRIPOD-------1606.html
>>
Hannes Alven - Mon, 02 Feb 2015 10:02:07 EST ID:SiTp3J4K No.54984 Ignore Report Quick Reply
1422889327459.jpg -(99363B / 97.03KB, 336x448) Thumbnail displayed, click image for full size.
>>54983
i meant to post this. it's a telrad. they're pretty tight and they're not too spenno...probably one of the best astronomy accessories i've purchased.

also im beginning to learn that a nice set of binoculars is pretty important for backyard astronomy, probably even more important than a scope tbh


m(11) by Kan Li Zhong - Tue, 06 Jan 2015 14:35:49 EST ID:Qrrkgdjp No.54896 Ignore Report Reply Quick Reply
File: 1420572949725.jpg -(42642B / 41.64KB, 569x350) Thumbnail displayed, click image for full size. 42642
cyanide in space (toward galactic core)
waxy cyanide in space (toward galactic core)
cyanide on Mars (furthest from Sol than Earth)
Radioactive Water (Diduetrium Oxide)
Watery super planets near the Galactic Core
Cold, Rogue Gas Giants (No detected host star) opposite of Glesian superplanets


after a little research using Twitter I'll find the location of Mars at the point of Curiosity's recent discovery.
>>
Karl von Weizsacker - Tue, 06 Jan 2015 23:52:25 EST ID:L6PvDKDA No.54900 Ignore Report Quick Reply
> Radioactive Water (Diduetrium Oxide)
What? Heavy water isn't radioactive, though it's used in some types of reactors. What are you on about anyway? nb


cool video by Walter Baade - Tue, 06 Jan 2015 00:15:08 EST ID:415JX8nG No.54895 Ignore Report Reply Quick Reply
File: 1420521308940.jpg -(33070B / 32.29KB, 640x467) Thumbnail displayed, click image for full size. 33070
Here's a cool video on quantum mechanics I found, there's no hard math in it, but it really made me see things in a different way.
youtube.com/?reload=7&rdm=1cbzr13i6#/watch?v=BFvJOZ51tmc

It revolves around the famous debate between Bohr and Einstein over really their philosophies on the fundamental nature of reality. But it really drove home to me a lot of principals of quantum mechanics.

Picture is of the election shell around a hydrogen atom
Also: General far out stuff thread
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Walter Baade - Tue, 06 Jan 2015 15:21:45 EST ID:H3af7FdZ No.54897 Ignore Report Quick Reply
https://www.youtube.com/watch?v=BFvJOZ51tmc


Worlds Largest Optical Telescope Gets Green Light by Urbain Le Verrier - Tue, 09 Dec 2014 19:35:39 EST ID:CSHK8ujB No.54790 Ignore Report Reply Quick Reply
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The European Extremely Large Telescope (E-ELT), a planned 39 meter telescope to be built high in the atacama desert has received sufficient funding to move into implementation. The observatory aims for first light around 2024.

http://www.eso.org/public/images/eso1440a/

At 39 meters the telescope will dwarf the current 8-10 meter class telescopes with 4 times the resolution and about 15 times the collecting area.

The telescope evolves around several science themes from large to small. It's extreme resolution combines will provide Hubble like views of galaxies 30 times further away but also with the power to resolve every pixel into a spectrum. This will mean a great deal for galaxy formation.

On the topic of exoplanets E-ELT will have a high precision spectrograph capable of confidently detecting earth like planets around sun like stars. With later instruments it will also be capable of directly imaging super-earths. With time it could provide evidence of continents and oceans.

It's high precision spectrograph of directly measuring the expansion of the universe for the first time. Redshift drift is an effect where the expansion of the universe causes redshifts to slowly increase over time.

E-ELT boasts big science and some incredible engineering.
9 posts and 1 images omitted. Click Reply to view.
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Thomas Henderson - Fri, 12 Dec 2014 12:50:19 EST ID:YHjXylC8 No.54809 Ignore Report Quick Reply
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Science is done by scientists. They're not trying to sell people products, forming committees to come up with better names names for things don't get us any closer to mars.

>>54805
Then what are we going to call a device that detects Oort-cloud objects?


HST image 7A24F will resolve a very large region of sky at a very high resolution. It'll be the largest compilation of images at this resolution anyone's done in awhile.
Other telescopes just look at the surface, the Hubble looks deeper. We'll call it "Deep Field"

This one can see even further.
..."Ultra Deep field"?

>Enhance
This one can nearly see back the the start of the universe.
Fuck it, Call it "Deep Field Extreme. But capitalize the X.
>>
Anders Angstrom - Fri, 12 Dec 2014 13:09:24 EST ID:H3af7FdZ No.54810 Ignore Report Quick Reply
for a moment I thought it was called Worlds Largest Optical Telescope
this is indeed getting retarded, whats wrong with John or Bill?
>>
Kiyotsugu Hirayama - Fri, 12 Dec 2014 15:02:50 EST ID:CSHK8ujB No.54811 Ignore Report Quick Reply
>>54809
Nice post, tiny nitpic. The deep fields are actually a very small region of the sky.
>>
John Bahcall - Mon, 05 Jan 2015 04:07:37 EST ID:uAV78rGD No.54893 Ignore Report Quick Reply
Does it get red, blue, infrared and ultraviolet light too?
>>
John Wheeler - Mon, 05 Jan 2015 23:21:24 EST ID:CSHK8ujB No.54894 Ignore Report Quick Reply
>>54893
Yes. Initially the instumentation will focus on the near infrared because adaptive optics is easier there and so you get the most out of the telescope. Possibly with a mid infrared camera also. After that visible and UV will come in.


Panspermia by Walter Adams - Mon, 29 Dec 2014 16:10:02 EST ID:h1NupmlQ No.54865 Ignore Report Reply Quick Reply
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Oh shit. I just realized that panspermia is plausible. For those here who dont know, Panspermia basically explains that the building blocks for life, or even micro-organisms came originally from some extra-terrestrials source [read: Not "aliens" per se].

The way I came to this self realization is by reading about the Voyager & Pioneer crafts, and this page from What If:

https://what-if.xkcd.com/117/

So according to this author, whom I would say is slightly reliable if not on the optimistic side, there are a number of microorganisms that remain viable upon spacecraft after launch. Even though most craft are decontaminated, there are still some number of organisms left. Now, a number of craft have failed in their missions and impacted planets. Another number of craft have willingly set down upon planets.

Do you think it is possible that there could be cross contamination from earth based organisms on any local celestial bodies, and more, do you believe that if microorganisms contaminated Mars, or Titan, etc. that they could remain viable, or even multiply?
>>
Giovanni Cassini - Wed, 31 Dec 2014 20:56:46 EST ID:ksAXy5yQ No.54878 Ignore Report Quick Reply
>>54865
Just because panspermia is plausible, doesn't mean it happened. I'm not assuming that you meant that but I'm just throwing that out there just in case. Also, if panspermia was the only way that life is formed, we fall into sort of a "turtles all the way down" or "chicken or the egg" infinite-loop kind of paradox.

Regardless, it would be unlikely that a spacecraft would be contaminated by an extremophile hardy enough to survive in those conditions, not saying that one doesn't exist here on Earth. But they are typically found in very extreme locations such as the bottom of the sea floor, deep underground, or in Antarctica.
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James Elliott - Thu, 01 Jan 2015 23:18:56 EST ID:XwQwdExC No.54885 Ignore Report Quick Reply
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The 11th episode of the new Cosmos TV series shows a very plausible explanation for the origin of life being Panspermia; I suggest you watch that episode if you are interested in the subject. I made a thread on /sagan/ about this exact same topic early last year, see this post here:
>>53790

I just find it incredibly interesting how we are finding amino acids and other biological building blocks just floating around in space...
>>
Robert Wilson - Fri, 02 Jan 2015 03:09:47 EST ID:H3af7FdZ No.54886 Ignore Report Quick Reply
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name for this hypothesis contains a word of sexual nature and its meaning can have vulgar, or even sexist overtones to sensitive people
>>
Annie Cannon - Sat, 03 Jan 2015 00:21:26 EST ID:415JX8nG No.54889 Ignore Report Quick Reply
I think a reasonable to suggest that if panspermia is correct, most habitable places in this solar system should be inhabited.
I think Martian caves, Europas oceans or slush, and I was thinking maybe even volcanoes on titan, there may be liquid water with interesting chemistry going on.

Also, Curiosity detected organic carbon when it burned some soil containing water ice in a sample retrieved a few inches underground. Nothing definitive, but an interesting signal none the less.

Of course not finding life wouldn't necessarily be proof that panspermia didn't happen, but it would imply that life needs more particular conditions to survive.

We are always finding life that pushes the boundaries of what we thought was possible, if life can in fact exist elsewhere in our solar system, it will.


Study finds possible alternative explanation for dark energy by Joseph von Fraunhofer - Tue, 30 Dec 2014 19:38:01 EST ID:ksAXy5yQ No.54870 Ignore Report Reply Quick Reply
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http://phys.org/news/2014-12-alternative-explanation-dark-energy.html
>The predicted effects of time being faster in the past would have the effect of making the plot of supernovas become linear at all distances, which would imply that there is no acceleration in the expansion of the universe. In this scenario there would be no necessity to invoke the existence of dark energy.

So pretty much if this is true, Dark Energy doesn't exist and it's observed effects are really caused by time dilation. Hubble expansion is really just an illusion caused by time slowing as the universe ages. We see acceleration at increased distances because when you look farther away it means you look back in time, and time is actually slowing down.

Also, this would imply that as the state of the acceleration is essentially linear, there will be no Big Rip or Big Crunch because the acceleration is not positive or negative. The universe will likely end in a slow Heat Death.
7 posts and 1 images omitted. Click Reply to view.
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Fritz Zwicky - Wed, 31 Dec 2014 21:01:27 EST ID:XwQwdExC No.54879 Ignore Report Quick Reply
Since the earth (along with the rest of the galaxy) is moving through intergalactic space at nearly 2 million miles per hour, does that mean our galaxy has its own unique amount of time dilation (with respect to other galaxies/celestial structures? Does time run slower in faster-moving galaxies? I mean, does it make a difference whether a galaxy is moving towards/away from your point of reference? For example, could the degree of time dilation in one galaxy appear to be higher when observed from one galaxy, but appear to be lower when observed from another galaxy that is moving in a different direction from the first? If our solar system existed in a different galaxy moving a different direction, would the time on that bizarro-earth run at a different "clock" compared to our Milky-Way Earth?
Does that even make sense? Sorry, time dilation confuses me...

Also, how does light even propagate at all, when anything traveling that fast would have so much time dilation that its time for it would've slowed to basically a complete halt? How can it appear to move at 299,792,458 meters per second when it takes it an infinite amount of years for it to even "experience" one second?
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Galileo Galilei - Wed, 31 Dec 2014 21:35:01 EST ID:7d1GyK7j No.54880 Ignore Report Quick Reply
>>54879
>Since the earth (along with the rest of the galaxy) is moving through intergalactic space at nearly 2 million miles per hour, does that mean our galaxy has its own unique amount of time dilation (with respect to other galaxies/celestial structures?
Yes there is time dilation (as long as is not expansion due to the expanding universe). Both galaxies will see the other running slow, that is one of the cornerstones of relativity. Neither is more right than the other in this observation.

>I mean, does it make a difference whether a galaxy is moving towards/away from your point of reference?
It does. This is the Doppler effect, slightly different from time dilation. If something is moving towards you you observe them sped up because the distance the light has to travel from them to you decreases every second so if you were watching a clock tick you would see it run fast. If it was running away it would be slow. This is just like hearing the pitch of an ambulance siren change as it passes you. The important thing about relativity is that the even if it is running perpendicular to the line of sight (getting neither closer nor farther away) there is an observed slowing, this is time dilation.

>For example, could the degree of time dilation in one galaxy appear to be higher when observed from one galaxy, but appear to be lower when observed from another galaxy that is moving in a different direction from the first? If our solar system existed in a different galaxy moving a different direction, would the time on that bizarro-earth run at a different "clock" compared to our Milky-Way Earth?
Yes but the important thing is that time dilation due to velocity is symmetric, they see your clock tick slow, you see their clock tick slow. Different galaxies would see different degrees of time dilation if they had different velocities.

>Also, how does light even propagate at all, when anything traveling that fast would have so much time dilation that its time for it would've slowed to basically a complete halt?
Some people would claim the photon experiences no time, it can propagate because that is not time dilated. However strictly special relativity does not describe time dilation for light. Relativity assumes just two things but one of them is that light is away measured at the same speed in all frames. To calculate time dilation for an object you need a frame traveling alongside the object, not allowed for light.

>>54873
Possibly, possibly not. The universe is either flat or just closed. If it is flat then then there would be no time dilation because the global geometry would be unchanged. Either way it would be very minor accept in the very early universe.
Comment too long. Click here to view the full text.
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James Elliott - Thu, 01 Jan 2015 20:38:37 EST ID:XwQwdExC No.54883 Ignore Report Quick Reply
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>>54880
very interesting, thanks for your reply. I find time dilation really fascinating.

About "gravitational time dilation":
What if gravitation was merely a secondary effect of increased time dilation (rather than the other way around, i.e. time dilation being "caused" by increased gravity), with objects having a natural tendency to gravitate towards regions of spacetime with slower time? Do you think this is at all possible?

Even a spaceship traveling at a significant fraction of the speed of light would have greatly increased mass (according to E=mc^2), and therefore would also have a greatly increased gravitational field. In this case, the increased gravity would act like natural "drag" to slow the velocity of the spacecraft down to a more neutral speed (with respect to other moving bodies in the universe). Is it at all plausible to consider that gravity may be a "fictitious force" like we consider the centripetal force to be?

sorry if these are dumb questions
>>
Giovanni Cassini - Fri, 02 Jan 2015 08:47:54 EST ID:ksAXy5yQ No.54887 Ignore Report Quick Reply
>>54883
If anything, things would seem to move away faster as they move into space that experiences a faster time rate. Oh wait, they already do and this is why we think there's dark energy.

All this still doesn't explain dark matter.
>>
Henry Russell - Sun, 04 Jan 2015 14:25:15 EST ID:ksAXy5yQ No.54890 Ignore Report Quick Reply
>>54887
Thought experiment, feel free to dismiss this as nonsense.

What if dark matter is somehow linked to the apparent mass increase objects experience as they approach light speed?

In localized areas where the time is not moving faster, objects to not seem to have any increased mass. But more distant objects, which are relatively moving faster and faster away from us approaching light speed more and more, objects are actually apparently gaining mass due to general relativity.

This could be tested by measuring the mass of extremely distant objects over time but I'm afraid it would take too much time, in human years, to observe a change.


Gravity Question by Edwin Salpeter - Mon, 15 Dec 2014 11:28:17 EST ID:415JX8nG No.54821 Ignore Report Reply Quick Reply
File: 1418660897305.jpg -(18309B / 17.88KB, 450x450) Thumbnail displayed, click image for full size. 18309
Would two colliding gravitational waves exert a tiny force against each other?

If they did at distances where the universe becomes homogenized, could the cumulative force of colliding gravitational waves of the rest of the universe overcome the weak attraction of gravity?

This isn't against dark energy, I was just wondering if it could be a contributing factor.
2 posts omitted. Click Reply to view.
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Ejnar Hertzprung - Tue, 16 Dec 2014 00:51:40 EST ID:415JX8nG No.54827 Ignore Report Quick Reply
i know it's a calculable thing with relativity, if someone around here knows the physics.

I guess another way of asking the question would be, do two colliding gravitational waves cause space (and time) to expand between them?

>>54825
said waves of equal magnitude cancel out, but that would only be a specific radius (roughly) of your section of the universe, where the threshold of balance between the force of waves is equal.


I guess another question to ask would be do colliding gravitational waves increase the space (and time) between objects noticeably on super-galactic levels?
>>
Ejnar Hertzprung - Tue, 16 Dec 2014 00:53:14 EST ID:415JX8nG No.54828 Ignore Report Quick Reply
>>54827
sorry for that retard double statement, I'm drunk and high, and cool
>>
Caroline Herschel - Tue, 16 Dec 2014 04:56:03 EST ID:Ncnb3OJc No.54829 Ignore Report Quick Reply
1418723763789.gif -(41331B / 40.36KB, 150x150) Thumbnail displayed, click image for full size.
Gravitational waves don't have a longitudinal component, so they don't cause expansion or contraction of space along the direction of propagation. They cause expansion or contraction perpendicular to the direction of propagation. Pic related, it's what you'd see if a very strong gravitational wave traveled along the line from your screen to your face. It simultaneously expands and contracts in such a way that any area is only deformed, not increased or decreased. There is no unbalanced force, thus, it can't contribute to the metric expansion of spacetime.

Two gravitational waves would not collide, they would constructively or destructively interfere. That means that in some places, the effect in the gif would be amplified, while cancelled out in other places. Interference still wouldn't create unbalanced forces.

Another argument against it being related to the expansion of spacetime is that the strength of gravitation waves are inversely proportional to the distance from the source. The expansion of spacetime, on the other hand, is most significant in areas of low gravity. Galaxies are receding, but not falling apart. Binary stars (which are likely generators of gravity waves) don't repulse other objects or binary stars.

Finally, keep in mind that gravitational waves are generated only by accelerating objects, they only propagate changes in a gravitational field, they're not the carriers of gravity or the dual of gravitons.

Disclaimer: I'm not a physicist nor do I understand the math. This is just what I picked up reading about the topic.
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Bruon Rossi - Sun, 28 Dec 2014 22:33:12 EST ID:2uBuMclp No.54861 Ignore Report Quick Reply
>>54821
weak or strong gravitational waves exert a force against each other. thats why while you are being pulled to the earth the earth is also being pulled toward you.
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Arno Penzias - Mon, 29 Dec 2014 03:51:04 EST ID:w9Ju60EU No.54862 Ignore Report Quick Reply
>>54861
No, read the post above yours.


Do dwarfs live on Pluto? by :3 - Wed, 24 Dec 2014 07:31:28 EST ID:PNtK+lw6 No.54857 Locked Ignore Report Reply Quick Reply
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Hello.

Today on https://www.kickstarter.com/projects/1520367906/max-navy-1488-space-program there is a project that might tell us why Pluto really isent classed as a planet anymore.

Do anyone know if aliens live on Pluto?

Is NASA refusing to tell us why they really changed what we now say Pluto is?

Is Earth in some sort of conflict with the dwarfs?

I pledged some money and if you just like me want to find out the truh please try to get it 100% funded.
Locked
Thread has been locked
Thread was locked by: The_Regal_Machine
Reason: /tinfoil/
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Joseph-Louis Lagrange - Wed, 24 Dec 2014 13:30:17 EST ID:vud/nmWg No.54858 Ignore Report Quick Reply
dwarf people are not people.


Interstellar Question by Edmond Halley - Wed, 17 Dec 2014 15:42:59 EST ID:9uY/b809 No.54832 Ignore Report Reply Quick Reply
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Not here to talk about whether or not it was good movie or not. Just had a question that has me a little baffled.

So they go down on the planet near the black hole with the intense gravity, and they leave the black guy behind. Due to relativity time passes for the black guy much faster than on the distorted planet. So, would the black guy see if he looked down at the planet with a high power telescope? Would they be moving extremely slow or what?
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Thomas Henderson - Wed, 17 Dec 2014 23:46:43 EST ID:Ncnb3OJc No.54836 Ignore Report Quick Reply
yeah
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Henry Russell - Tue, 23 Dec 2014 05:01:31 EST ID:3dhJAQX4 No.54854 Ignore Report Quick Reply
no
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Bart Bok - Tue, 23 Dec 2014 16:01:11 EST ID:KCC23SOp No.54855 Ignore Report Quick Reply
>>54832
Doesn't matter because they would have never gone to waterworld; the signal would have been "stretched" by gravity as well; they wouldn't be able to receive an affirmative message and if they did it (but they wouldn't) would just be junk. Even the binary pings they were using would be rendered unusable. speculation, but I do have a background in radio communication; feel free to debunk if I'm wrong, but I'm pretty sure I am not.

But yes, he would see their journey unfold at a snails pace, they would look like they were hardly moving.
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Bart Bok - Tue, 23 Dec 2014 20:28:18 EST ID:KCC23SOp No.54856 Ignore Report Quick Reply
>>54855
Addendum to what I said earlier: He may not be able to see them well or even at all; if he can see them at all they will appear to be moving _very_ slowly. A fixed number of photons travel from the planet to the distant observer in orbit, because of the distorting effect in play photons leaving the planet nano seconds after other photons will reach the observer quite a bit after the photons they had been chasing. The guy in space is receiving an hours worth of photons over a 20 year period. That should have an effect on how the entire planet is seen; like it should leave a ghost trail in its orbit or something.


Black Holes and trash compactors by Edmond Halley - Wed, 17 Dec 2014 22:14:24 EST ID:n8sUDEe1 No.54835 Ignore Report Reply Quick Reply
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If black holes are at the center of each galaxy, and their gravitational vortex creates the whirlpool spiraling of galaxy arms, then is it possible black holes and gamma ray bursts such as Cygnus X-1 act as garbage disposals or trash compactors and they can get full. Does the pull of a black hole suck in at varying speeds? Do some black holes start slowing down? Is there too much matter in them?

On an unrelated note, my garbage disposal is currently jammed.
1 posts omitted. Click Reply to view.
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Vera Rubiin - Thu, 18 Dec 2014 06:59:28 EST ID:ksAXy5yQ No.54838 Ignore Report Quick Reply
>>54837
>black holes don't get full
I can't find the freaking article so you're on your own with this one but if a black hole is overloaded with too much matter coming in it loses sucking power.

But the thing is it has to be a lot of matter and it has to keep coming in. If it stops, the black hole returns to full strength.

Google failed me.
>>
Thomas Henderson - Thu, 18 Dec 2014 09:50:51 EST ID:Ncnb3OJc No.54840 Ignore Report Quick Reply
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>>54838
wtf are you talking about? you're on your own with your baseless citation-required claim.
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Henry Russell - Thu, 18 Dec 2014 14:29:32 EST ID:YHjXylC8 No.54842 Ignore Report Quick Reply
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>>54838
If there's too much mass being accreted, a portion of the matter being accreted will be ejected, but the size/shape of a body is irrelevant to its gravitational effect on another body, only center of mass and distance.
>>
Wilhelm Beer - Thu, 18 Dec 2014 19:09:50 EST ID:ksAXy5yQ No.54843 Ignore Report Quick Reply
>>54840
Finally found something similar but it's not what I remember
http://www.nbcnews.com/id/6940627/ns/technology_and_science-space/t/scientists-learn-how-black-hole-stops-itself/#.VJNnNAYDA
More or less if 2 supermassive black holes are merging, the accretion discs can merge into a quazar that will blow all matter away from the holes so nothing will fall into the black holes, effectively neutralizing their pull for a short amount of time.

But this isn't exactly the article I remember. I think I might be suffering from false-memory syndrome which is weird because my memory is usually flawless and I assure you that I'm not just pulling this out of my ass (aka lying).

I really can't find it but I know I fucking saw it. This is frustrating.

Just from my speculation, since Hawking radiation works by 2 entangled particles approaching a black hole and only one falling in, with the other by chance flying off, the black hole loses mass, or that's as much as I understand. If we have a black hole of 10 stellar masses and throw dozens of stellar masses of entangled particles at it, the black hole would eventually evaporate completely because it's natural rate of decay by hawking radiation would have been artificially increased. I wouldn't doubt a type 3 civilization would be capable of destroying a black hole in this manner. But this isn't what I read either.
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Johann Bode - Thu, 18 Dec 2014 20:36:59 EST ID:Ncnb3OJc No.54844 Ignore Report Quick Reply
>>54843
Reading about the quasar phase was interesting, thanks.

> effectively neutralizing their pull
Though the quasar's wind blows gas away and inhibits the growth of the black hole, I don't see it as the black hole losing strength. There are other things (stars orbiting beyond the significant effects of the cosmic wind, dark matter) that continue being dominated by the black hole's gravity. I guess I'm arguing semantics.

> Hawking radiation works by 2 entangled particles approaching a black hole and only one falling in
Entanglement isn't important to Hawking radiation. Virtual particle pairs that occur very close to the event horizon can be split apart by the gravity, with one particle accreted and the other escaping. The infalling particle represents negative energy since they're virtual (add up to 0) and the escaping particle is positive (it carries mass away from the black hole). Virtual particle pairs is just one way of explaining Hawking radiation. Another is quantum tunneling, which allows particles to cross the event horizon without moving faster than the speed of light.

> throw dozens of stellar masses of entangled particles at it, the black hole would eventually evaporate
That wouldn't work. We'd be throwing mass at the black hole and it would grow. Even if we could split virtual particles pairs with an artificial event horizon, any energy we could throw would be positive, meaning the negative half of the virtual pairs would reduce our own mass.


Subject Zero by Illuminati - Wed, 17 Dec 2014 20:29:13 EST ID:PNtK+lw6 No.54833 Ignore Report Reply Quick Reply
File: 1418866153109.jpg -(75298B / 73.53KB, 1024x768) Thumbnail displayed, click image for full size. 75298
What does this image show really?

I do belive that its space related.
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Joseph Taylor Jr. - Wed, 17 Dec 2014 22:01:23 EST ID:4HbkLal6 No.54834 Ignore Report Quick Reply
>>54833
http://en.wikipedia.org/wiki/Black_Knight_satellite
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Vera Rubiin - Thu, 18 Dec 2014 07:02:36 EST ID:ksAXy5yQ No.54839 Ignore Report Quick Reply
>>54834
>a thermal blanket lost during an EVA
Bullshit, who brings a blanket on an EVA?

And if it is a blanket, who let the fucking clown into EVA?
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Henry Russell - Thu, 18 Dec 2014 12:39:10 EST ID:YHjXylC8 No.54841 Ignore Report Quick Reply
1418924350040.png -(975679B / 952.81KB, 1006x500) Thumbnail displayed, click image for full size.
>>54839
Several segments of the station are covered in thermal blankets, some of these need to be removed when connecting segments together.
In at least one case, several parts drifted away due to complications.


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