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420chan is Getting Overhauled - Changelog/Bug Report/Request Thread (Updated July 26)

Where's The Flux

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- Fri, 25 Mar 2016 03:54:23 EST t1vMK9Uc No.56140
File: 1458892463622.png -(603447B / 589.30KB, 854x480) Thumbnail displayed, click image for full size. Where's The Flux
https://en.wikipedia.org/wiki/KIC_8462852

tl;dr - star has some really odd brightening and dimming patterns inconsistent with any hitherto known natural phenomenon. The best explanation is a comet having broken up in an extremely regular pattern at a really silly angle. A possibility raised is a civilization setting up a dyson swarm, or basically a bajillion solar panels coordinating with themselves to stay in orbit and produce the energy a super advanced space faring civilization needs, but on the other hand the system is dark in infrared light suggesting that the light from the star isn't being absorbed and converted into anything (which heats things > releases infrared, because nothing is 100% efficient)


any ideas on where the infrared might be, given that it's a dyson swarm? Or opinions on the correct natural explanation?

Moonbase 3

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- Fri, 12 Feb 2016 11:23:14 EST +eqmThO1 No.56048
File: 1455294194760.jpg -(45231B / 44.17KB, 640x360) Thumbnail displayed, click image for full size. Moonbase 3
Ran across this and thought /sagan/ would appreciate it.

https://www.youtube.com/playlist?list=PLAE712CF17EC14903

This is a 1973 BBC/20th Century Fox/ABC production, created by Dr. Who's Terrance Dicks. It only ran for 6 episodes, and didn't take off, mostly because it was just a little too realistic, concentrating on scientific accuracy over B.E.M.s and green bitches and space dogfights, but I thought it'd find some new fans here.
12 posts and 8 images omitted. Click View Thread to read.
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Russel Hulse - Tue, 22 Mar 2016 17:15:13 EST AonVP/Hg No.56136 Reply
1458681313640.png -(61390B / 59.95KB, 367x156) Thumbnail displayed, click image for full size.
>>56066
duuuude, found a torrent of the manga and it kicks ass, highly recommended
thanks a lot!

I hate the fermi paradox

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- Sat, 30 Jan 2016 02:53:49 EST Y6cuAVAn No.55979
File: 1454140429941.jpg -(232492B / 227.04KB, 600x400) Thumbnail displayed, click image for full size. I hate the fermi paradox
The Fermi paradox is not a fucking paradox. It's completely reasonable that in a universe this large and the short amount of time we have had are ears open looking for radio broadcasts AND the fact that intelligent life evolving or even evolving with the senses that would make radio waves a logical invention for them is highly unlikely. Given what we know about how many planets are in the habitable zones of stars.

It's totally reasonable that we have not heard a thing from anyone. Maybe if we listened for like I don't know 3 million years THEN we can safely say "yes fermi was right this IS a pardox" can anyone prove this idea wrong?
69 posts and 14 images omitted. Click View Thread to read.
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Joseph Taylor Jr. - Tue, 15 Mar 2016 12:34:15 EST YHjXylC8 No.56127 Reply
>>56126
But evidence of life starts very soon after the earth cooled.
This implies either those molecules are incredibly likely to occur on a scale of millions of years, and certain to occur on a scale of billions of years given pre-earthlike conditions.
>>
Joseph Taylor Jr. - Tue, 15 Mar 2016 14:51:44 EST YHjXylC8 No.56128 Reply
1458067904251.png -(214525B / 209.50KB, 600x600) Thumbnail displayed, click image for full size.
>>56127
*This implies those molecules are incredibly likely to occur on a scale of millions of years, and certain to occur on a scale of billions of years given pre-earthlike conditions.
>>
Bart Bok - Thu, 17 Mar 2016 03:05:33 EST 3t/weoS/ No.56130 Reply
>>56127

For prokaryotes it seems the odds are in their favor, but eukaryotic life which is near required for multicellular life needed almost half the lifetime of Earth to develop. Which makes sense as they were born from symbiotic relationships between different prokaryotes, something that need specific spesializations to occur beforehand.

Is the big bang happening constanty?

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- Sat, 12 Mar 2016 11:21:59 EST D/M9znoO No.56118
File: 1457799719882.jpg -(42859B / 41.85KB, 640x605) Thumbnail displayed, click image for full size. Is the  big bang happening constanty?
My physics teacher has a theory that if the big bang theory then why can't it happen again
Is it possible that the universe is expanding because of big bangs are happening constantly?
How does this fit with the big bounce theory?
The first issue I see is how the big bangs are being formed and in what enviroments.
1 posts omitted. Click View Thread to read.
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William de Sitter - Sat, 12 Mar 2016 15:08:48 EST pjhpxsvC No.56120 Reply
>>56119
I gotta add that there are hypotheses based on theoretical math that inflation is a neverending process, that is constantly spawning "universes" in different places from our universe.

I dunno man, I watched a lot of documentaries on theoretical physics when I smoked weed everyday and grew my own mushrooms and tripped every two weeks because tripping while listening to some astrophysics documentary is a fantastic way to get lost in closed-eye-visuals of space.
>>
Kiyotsugu Hirayama - Sat, 12 Mar 2016 20:37:36 EST D/M9znoO No.56121 Reply
>>56120
The universe is weird and scary.
Thanks for answering my question
>>
Kiyotsugu Hirayama - Sat, 12 Mar 2016 23:18:33 EST D/M9znoO No.56122 Reply
>>56119
whoops I should have replied to you and not the other guy lol
thought you were the same didnt check ID
:333

Van Allen Belts Proven to be "to lethal to travel in"

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- Wed, 20 Jan 2016 18:13:58 EST sV+7XGwN No.55944
File: 1453331638661.jpg -(469133B / 458.14KB, 900x658) Thumbnail displayed, click image for full size. Van Allen Belts Proven to be "to lethal to travel in"
The Van Allen belts put out radiation that can be extremely detrimental to a persons health and could even lead to death. NASA itself has claimed it can't get through the radiation belts.

https://www.youtube.com/watch?v=NlXG0REiVzE
https://www.nasa.gov/content/goddard/van-allen-probes-spot-impenetrable-barrier-in-space

Now that NASA has tentatively acknowledged that the Van Allen Belts can't be passed, how is it we were able to land a man on the moon?

>the answer may surprise you

New evidence shows that robotic drone type machines may have been used inside the Apollo astronauts suits while the astronauts remained safely in low earth orbit. Apollo 9 tested that astronauts could survive in low earth orbit below the 1,000 km mark where the Van Allen Belts begin.

>The clunky mechanical engineering of the time combined with the human publics unawareness of how gravity on the moon effects objects differently than on Earth lead to this kind of Qausi-hoax to be implemented.

>It was implemented not for some nefarious reason but rather to protect our astronauts from dieing the minute they entered the belts, haven't you ever wondered why they keep the International Space Station so low in orbit?

https://www.youtube.com/watch?v=AOHMUQn_x7Q
https://www.youtube.com/watch?v=GIYdF7YlX3o
https://www.youtube.com/watch?v=yLw9a5t-sUs
https://www.youtube.com/watch?v=7-iCm9S53Jo
https://www.youtube.com/watch?v=lwVqVu5Tl-k

Does anyone have more info on this?

I'm not saying we didn't land on the moon but the radiation from the Van Allen Belts would simply be to much for a human body to take but a mechanized American could have survived.
15 posts and 4 images omitted. Click View Thread to read.
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Kiyotsugu Hirayama - Fri, 26 Feb 2016 14:57:58 EST bUVcT3Vi No.56092 Reply
>>56056
The Van Allen belts would flash cook a person trying to go through them in a capsule
>>
Margaret Burbidge - Sat, 27 Feb 2016 13:46:11 EST vB+y87GU No.56099 Reply
>>56092
Really?
Then how did the Apollo astronauts get through them?

LIGO Detects Gravitational Waves

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- Thu, 11 Feb 2016 11:18:29 EST y/fkgY/C No.56038
File: 1455207509740.jpg -(187125B / 182.74KB, 1200x999) Thumbnail displayed, click image for full size. LIGO Detects Gravitational Waves
http://www.ligo.org/news/detection-press-release.pdf

>Based on the observed signals, LIGO scientists estimate that the black holes for this event were about 29 and 36 times the mass of the sun, and the event took place 1.3 billion years ago. About 3 times the mass of the sun was converted into gravitational waves in a fraction of a second — with a peak power output about 50 times that of the whole visible universe. By looking at the time of arrival of the signals — the detector in Livingston recorded the event 7 milliseconds before the detector in Hanford — scientists can say that the source was located in the Southern Hemisphere.

Get hype!
11 posts and 1 images omitted. Click View Thread to read.
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Cecelia Payne-Gaposchkin - Thu, 18 Feb 2016 20:18:57 EST 415JX8nG No.56065 Reply
>>56061

I was thinking about that too brotha, but I guess electric cars are built with a multitude of systems to create redundancy; multiple brake systems in case the pressure gets lost it one, it just switches to another system for example.

It really emphasizes how cheap mechanics have become
>>
William Herschel - Sat, 20 Feb 2016 17:14:58 EST fDZ3h+Vd No.56072 Reply
>>56065
This, incase of malfunction the cars on the road today that have autonomous driving of some sort already have systems in place that bring the car to gentle stop and ofcourse they include/would include some kind of manual control.
>>
Carl Seyfert - Sun, 21 Feb 2016 04:51:26 EST Yyh+3hGH No.56073 Reply
Inb4 assholes figure out that putting more mannequins in the path of an AI car than it's carrying passengers will cause it to decide to crash into a barrier rather than into the fake people on the road, and hackers reprogram your car for to deliver you and your valuables to a location conveniently absent of police and witnesses.

Planet Nine

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- Wed, 20 Jan 2016 21:32:30 EST bnm9ITDo No.55945
File: 1453343550884.jpg -(29930B / 29.23KB, 700x394) Thumbnail displayed, click image for full size. Planet Nine
Scientists have found evidence for a new, ninth planet in our solar system with a mass around ten times that of Earth. Get hype.

http://www.npr.org/sections/thetwo-way/2016/01/20/463087037/hints-of-a-hidden-distant-planet-in-our-solar-system
13 posts and 2 images omitted. Click View Thread to read.
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William de Sitter - Wed, 03 Feb 2016 14:35:11 EST fDZ3h+Vd No.56010 Reply
>>55994
I've been wondering, is the Kepler powerful enough for this? If so we should find out in 2018.

Pluto is a planet again

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- Mon, 13 Oct 2014 13:08:55 EST CLrN9E3V No.54501
File: 1413220135538.jpg -(56602B / 55.28KB, 600x600) Thumbnail displayed, click image for full size. Pluto is a planet again
as of oct 2nd 2014 pluto's a planet what are your thoughts /sagan/
48 posts and 6 images omitted. Click View Thread to read.
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Henry Draper - Sun, 07 Feb 2016 04:00:14 EST YHjXylC8 No.56021 Reply
1454835614254.png -(168472B / 164.52KB, 740x697) Thumbnail displayed, click image for full size.
>>56018
Unless they were directly opposed, they'd collide or fling eachother into funny orbits eventually. Though smaller planets further out would take longer.
There's a reason planets tend to fall into an orbital resonance.

Cut and dry, Black and White (-Holes)

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- Thu, 21 May 2015 17:47:06 EST KymFiCZg No.55338
File: 1432244826488.gif -(2682500B / 2.56MB, 350x195) Thumbnail displayed, click image for full size. Cut and dry, Black and White (-Holes)
I'm a layperson scurrying across the floor of /sagan/, please don't annihilate me.

Is there any reason white holes would exist? From what I understand black holes just keep growing, gaining in mass and gravity magnitude in relation to their mass. Their ultra-compact density is what gives them their swag about the vacuum of space.

If white holes were real, then how would black holes continue to grow and increase their gravity? Debris, planets, stars and other space stuff 'slows' as it reaches the center of the hole as I understand it. Would that mean filling a water balloon with a tiny leak in it is a good analogy for what's theoretically happening?
39 posts and 4 images omitted. Click View Thread to read.
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Walter Baade - Mon, 11 Jan 2016 23:10:45 EST x7oDvr/y No.55925 Reply
>>55924
Overly simplified version: Einstine's math allows for the opposite side of gravity, repellent gravity. Instead of pushing down on the fabric of space time and making a 'dent' it is pushing up and making a 'hill', kinda. Just like the gravity of a blackhole is strong enough to keep light from escaping, the gravity of a whitehole is repellent enough that light cannot breach it.
>>
Joseph von Fraunhofer - Tue, 12 Jan 2016 07:22:46 EST fDZ3h+Vd No.55926 Reply
>>55925
Plus the fact that is one existed, the amount of energy it would be spewing out would basically make it unenterable, or even approachable.
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Paul Goldsmith - Wed, 13 Jan 2016 23:38:57 EST O0Ehlx70 No.55927 Reply
1452746337678.jpg -(86689B / 84.66KB, 600x701) Thumbnail displayed, click image for full size.
>>55338
What if White Holes only exist for a fraction of a second and in the wake of their brief existence form entire universes in a multiverse.

tl;dr the Big Bang was, in fact, a White Hole and we are all (entropy, spacetime) that endlessly falling 'hill' (as opposed to a black hole's infinite depth) that will eventually tear and fizzle.

This old ass thread was very insightful. Time for another bowl.

What are WE going to see?

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- Sun, 03 Jan 2016 16:00:54 EST 1zawVaPa No.55910
File: 1451854854357.jpg -(77534B / 75.72KB, 750x545) Thumbnail displayed, click image for full size. What are WE going to see?
What's the most advanced/coolest/most interesting space related thing our generation is going to witness?
Primitive colonies? Asteroid mining? The development of a new form of space travel?
Post your predictions.
3 posts and 1 images omitted. Click View Thread to read.
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Russel Hulse - Mon, 04 Jan 2016 21:53:11 EST oigSnnJc No.55915 Reply
We'll probably see commercial asteroid mining by robots in our later years, most likely. Hopefully they dont fuck up and drop a rock on us though, would that suck or what?
>>
Walter Adams - Tue, 05 Jan 2016 09:43:18 EST fDZ3h+Vd No.55916 Reply
>>55911
There will always be shit to fix on Earth, that can't stop us from going outwards. We've got the resources to spare.

We'll definately see atleast a man on Mars, probably the start of a colony too (never bet against Elon). Maybe a base on the moon, but my bet is that a race to Mars will be kicking off soon and the moon will be a sideshow, R&D for Mars colony tops.

Maaaaaaaaybe Skylon, not holding my breath on that one though. Ion propulsion should get much better and if we get fusion knocked down in a decade or 2 that could feasibly take us to a nifty fraction of C. Alcuibierre drive seems like a pipedream, but you never know, would require something like a fucking anti-matter power source probably, though perhaps a large enough fusion reactor would do too...

If Elon gets his MCT concept with the BFRs done & produced, space mining probably will be feasible then. 100 tons to Mars yo, could probably haul serious cargo from the asteroid belt too since it wouldn't have to fight the gravity well of Mars.

AI most likely too, don't know if superintelligent AI, depends on how fast the AGI takes off, though looking at machine & deep learning these days it'll probably take off like a rocket.

Humanity's technology is on an exponential rise, just think how much the world changed between 2005-2015 compared to 1995-2005. We probably can't even imagine the shit that will be around in 60 years.

i don't believe in the moon

Locked View Thread Reply
- Mon, 04 Jan 2016 18:53:06 EST jKbCW6p+ No.55914
File: 1451951586784.jpg -(30069B / 29.36KB, 441x657) Thumbnail displayed, click image for full size. i don't believe in the moon
its just the back side of earth

Kill space rocks

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- Mon, 20 Jul 2015 06:32:20 EST 5RO7Hywq No.55532
File: 1437388340188.jpg -(132314B / 129.21KB, 960x720) Thumbnail displayed, click image for full size. Kill space rocks
A huge rock is headed straight for earth

We wrap a tarp around it with a space craft
Fill the tarp with a heavy gas
Once the pressure is high enough inside the tarp
We turn on rockets compressing the gass as much as possable on one side of the tarp
Then we blow up a nuke
Changing the course of the rock enough not to kill everyone on earth

Now you tell me how im wrong and feel better about the world
14 posts and 6 images omitted. Click View Thread to read.
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Paul Goldsmith - Fri, 18 Dec 2015 18:11:19 EST 415JX8nG No.55885 Reply
If asteroid mining became a big enough enterprise, could we wind up disturbing the orbits of asteroids in the inner solar system, increasing the rate of potential impacts?
>>
Russel Hulse - Sat, 19 Dec 2015 21:18:09 EST Y6cuAVAn No.55891 Reply
>>55883
i always love when someone HAS to mention no bumps.
>>
Chushiro Hayashi - Sun, 20 Dec 2015 19:27:29 EST vB+y87GU No.55892 Reply
>>55885
The asteroid belt is far more diffuse and spread out than we imagine it is.
Then again, all that travel and disruption is bound to knock some rocks loose.

You know what day it is...

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- Mon, 09 Nov 2015 15:06:18 EST X6E5uhNi No.55797
File: 1447099578162.gif -(522048B / 509.81KB, 200x150) Thumbnail displayed, click image for full size. You know what day it is...
Let's have a party thread.

Happy would-be 81st birthday, my friend
6 posts and 5 images omitted. Click View Thread to read.
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Riccardo Giacconi - Wed, 25 Nov 2015 20:31:46 EST X6E5uhNi No.55830 Reply
1448501506338.gif -(597530B / 583.53KB, 175x175) Thumbnail displayed, click image for full size.
DICKS EVERYWHERE
>>
Fred Whipple - Tue, 08 Dec 2015 20:19:12 EST X6E5uhNi No.55874 Reply
1449623952866.jpg -(58715B / 57.34KB, 500x750) Thumbnail displayed, click image for full size.
y'all are gay

bow down to our lord

Floating colonies on Venus

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- Sun, 06 Dec 2015 16:45:02 EST vB+y87GU No.55850
File: 1449438302494.jpg -(34599B / 33.79KB, 556x334) Thumbnail displayed, click image for full size. Floating colonies on Venus
What does /sagan/ think of this?
I think it's a pretty fucking sweet idea. I wonder what sort of materials you could use that are both light weight and durable enough for a floating Venusian colony. I had an idea that could help with the buoyancy of the thing: non essential parts of the structure (floors and walls) could be made out of brick like objects that are either vacuum hollow or filled with a gas like helium at very low pressure. They would be brick like objects because many could be punctured without jepordizing the integrity of the station. one could also vent waste heat out the bottom and sides to create a bit of thrust.
The only major problem would be in getting people and materials to and from the colony. Then again, I suspect by the time we're in a position to build something like this, navigating the haze of the Venusian atmosphere safely won't be much of a challenge.
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Johannes Kepler - Tue, 08 Dec 2015 16:13:19 EST IwAsVtyx No.55867 Reply
>>55866

Humans go places and do things to get stuff. Not just to do it, those emotions are just used to motivate people. Every great explorer was after land, gold, slaves, riches. I want riches. The asteroid belt is where its at.

I wouldn't want to go to Venus, there isn't anything there. You can't land on the surface, no moons, no nothing, bbbbooring. Even in your super-future there will be shit-holes no one will want to go to. Look at the US state of North Dakota, a giant frozen field full of self-destructive Native Americans, up until the last 10 year or so, it was fucking empty because all that was there was grass and nothing. But then fracking happened and then there was an oil boom and then 100,000s of people looking to get rich, and most of those people are blue collar folks with nothing else going for them. The blue collars go loose limbs getting the riches to pipe back to cities to be profits for rich owner of industry.

This is exaclty happening now, SpaceX, ULA, Virgin Galactic.

Given our lives now, i know in 300 years there will be a miserable dick job of 'asteroid miner'. So you didn't go to college and you are a physically capable young person, get your ass to space and go get some stuff.

I'm not folding my arms, I like realistic sci-fi. In your universe, I want magic powers like the force and shit.
>>
Robert Dicke - Tue, 08 Dec 2015 18:00:55 EST vB+y87GU No.55873 Reply
>>55867
>The asteroid belt is where its at.
Well obviously colonization of Mars and Venus and the construction of space habitats would take place within the context of a well established and rapidly expanding space economy. I don't have to tell you that there is an incredible abundance of resources between Mercury and suburban Jupiter. In the midst of taking advantage of this tremendous windfall, it only makes sense to put habitable places where we can. If for no other reason than as a way station and a refuge. (think a stop for fuel or something at a space station orbiting Venus on your way from Earth to Mercury or something)

>I wouldn't want to go to Venus, there isn't anything there. You can't land on the surface, no moons, no nothing, bbbbooring
The most brutal hellscape in the solar system is boring to you? I don't want to insult you or anything, but whaaa? I don't know how any place in our solar system could be considered boring (well, aside from the MASSIVE expanses of literally nothing, but that goes without saying)
>you can't land on the surface
With currently existing caveman tech it's not a very good idea.

>Given our lives now, i know in 300 years there will be a miserable dick job of 'asteroid miner'. So you didn't go to college and you are a physically capable young person, get your ass to space and go get some stuff.
Frankly neither of us can imagine what human societies will look like in three centuries. If neo-liberal capitalism is still the default system, I'm not sure we'll even be around in three hundred years. Anyway, asteroid mining will likely be almost entirely automated. It makes more sense to have a bunch of durable, easy to produce machines hacking up rocks in space, not a bunch of frail bloodsacks who can't function in an irradiated, freezing, vacuum.

> I like realistic sci-fi
Me too. I love Star Wars, but the lore of franchises like Star Trek and Mass Effect is so much more interesting BECAUSE so much of it is plausible.

>In your universe, I want magic powers like the force and shit.
I'm not operating within a magic universe. I'm talking about something that will become achievable within the context of a future space based economy. I see the point in your criticisms. There isn't a direct need for a Venusian colony when you could just have a few ring habitats orbiting the planet. Still, a floating colony could be useful for tourism and scientific research. And when you've got a massive economy and advanced technology, it's inevitable that some people will think "hey, lets do thing."

>>55868
Brah, the sun isn't a rare earth metal.

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