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420chan is Getting Overhauled - Changelog/Bug Report/Request Thread (Updated April 10)
Europa Mission Ignore Report View Thread Reply
Ejnar Hertzprung - Thu, 18 Aug 2016 23:04:09 EST ID:Y3T9nNnZ No.56318
File: 1471575849136.jpg -(65153B / 63.63KB, 320x380) Thumbnail displayed, click image for full size. 65153
Anyone else hyped for the Europa mission?


The US gov't has given NASA $30 millon to go poke around up there. They're gonna try to scoop up ejecta and see what's in it. I haven't been this interested in a mission since the Titan lander.
13 posts and 2 images omitted. Click View Thread to read.
Astrobiology Student - Wed, 23 Nov 2016 16:14:22 EST ID:UuJsarOA No.56671 Ignore Report Reply
I am! In fact, my Astrobio class had to do mission proposals for a few bodies to search for potential life. My group got Europa, so we came up with the porbe part of CLIPPER that congress asked for. Yes NASA is doing their own that hits the counsel next moth, but its a school project. Let me know if anyone is interested in the presentaton!
Fred Whipple - Fri, 10 Feb 2017 04:24:21 EST ID:tNU6hJcf No.56781 Ignore Report Reply

please, share some of the key details
George Gamow - Thu, 16 Feb 2017 22:54:10 EST ID:U3oyeBRN No.56788 Ignore Report Reply

I'm waiting for Triton Sample Return.

Teaching an astronomy class Ignore Report View Thread Reply
Frigate - Tue, 24 Jan 2017 17:29:35 EST ID:CtuYLr3e No.56766
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So next week, I have been given the opportunity to teach astronomy (sadly only stars and galaxies) and I need to add some stuff to it. I could go as hard as I want on these freshmen, so what should I include?
8 posts omitted. Click View Thread to read.
Joseph Taylor Jr. - Fri, 10 Feb 2017 20:16:33 EST ID:4yc+FRR6 No.56782 Ignore Report Reply
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That just sent me on a fun little side quest, thank you.
Joseph-Louis Lagrange - Thu, 16 Feb 2017 12:33:23 EST ID:M/g1akbS No.56786 Ignore Report Reply
Well, OP, How did it go??
George Gamow - Thu, 16 Feb 2017 22:51:43 EST ID:U3oyeBRN No.56787 Ignore Report Reply
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Random Space Fact youtube videos from Dr. Bruce Betts

Extreme blazar thread Ignore Report View Thread Reply
William Hartmann - Mon, 30 Jan 2017 14:35:44 EST ID:dz7Zv84F No.56774
File: 1485804944630.jpg -(147326B / 143.87KB, 985x739) Thumbnail displayed, click image for full size. 147326

Fuck yeah those black holes are massive

Aliens Ignore Report View Thread Reply
Mars - Sun, 16 Mar 2014 20:44:47 EST ID:Jzd78Ub0 No.53216
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Yo guys. I just had an opifany or what you call it(english is not my first language), if you consider that ufos really exists and the are flying in the sky all the time but why wont they communicate? Then it hit me, we would have done the same, using Rovers! Basically the ufos we see are probably machines flying about and taking pictures and samples of earth. They dont care that we see them, they obviously treat us as beings not worthy to be spoken to. I think its kind of creepy
55 posts and 4 images omitted. Click View Thread to read.
Kip Thorne - Thu, 02 Feb 2017 03:39:11 EST ID:10QI3ruX No.56776 Ignore Report Reply
Gonna have to agree, nb. No bueno. Was a nice read and all but I'm not gonna turn around and just start speculating wildly. Not that it isn't fun.But still. There is no way to put together an alien mind other than wild speculation. So there's not much to it as is.
Friedrich Bessel - Fri, 10 Mar 2017 12:22:11 EST ID:bbe1VMqZ No.56856 Ignore Report Reply
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Well while we no-bump it back to oblivion maybe we should post some pictures.
Fred Hoyle - Wed, 12 Apr 2017 23:46:48 EST ID:vwJ5gIk/ No.56912 Ignore Report Reply
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Gas Station Ignore Report View Thread Reply
MOON FUEL - Sat, 17 Dec 2016 00:07:43 EST ID:3JvngLEe No.56726
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Right now, I'm working on opening a gas station in low orbit around the moon, mostly refueling for interplanetary & deep space exploration. It'll have mechanics on site, parking on the dark side, though a bag of doritos will be $70 and a diet coke will be $14, you'll thank me when you come through. The air force 109 airlift is testing our tech in their fuel depot on the south pole. So I'm still going to come back to earth quarterly to visit the black bear sanctuary that I work at, but they've been getting so used to human food that they're getting pretty aggressive when I see them. Accually I've been pretty good about being able to chase bears out of the front yard, just by waving a broom and yelling, but my parents were out there the other day and ran when they saw our bear, and the little guy chased them. That really gave my parents a shock!
So, tldr; space won't kill me, the planet won't burn, we'll just leave it to the bears and other fluffy animals.
3 posts and 2 images omitted. Click View Thread to read.
bob - Mon, 19 Dec 2016 02:09:33 EST ID:YR8vKebs No.56730 Ignore Report Reply
Stephen Hawking - Sat, 14 Jan 2017 23:54:55 EST ID:veR+j0aW No.56759 Ignore Report Reply
hey man I'll take a pack of zigzag blues, and a lighter too.
Margaret Burbidge - Sat, 21 Jan 2017 22:04:37 EST ID:1xERvVrq No.56762 Ignore Report Reply
>pay in hiffwe?
is that like dogecoin?

Directly Imaging Planets Ignore Report View Thread Reply
Kip Thorne - Sat, 12 Nov 2016 10:31:11 EST ID:L+GCCa0j No.56654
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Hey guys. Good Morning. We can see other planets directly now.



Now we can start getting spectra and figuring out what's out there.
1 posts omitted. Click View Thread to read.
Heinrich Olbers - Mon, 14 Nov 2016 08:54:36 EST ID:1q2X8R/n No.56656 Ignore Report Reply
This news is really exiting, and im glad you posted this but that video is private you massive wonk
Bruon Rossi - Mon, 14 Nov 2016 10:38:13 EST ID:L+GCCa0j No.56658 Ignore Report Reply

Shit, it wasn't private when I posted it. Maybe the video was moved or something. Here's a working link: https://www.youtube.com/watch?v=rCP3rgVj1c0&t=2171

Sorry bud.
Edmond Halley - Sun, 08 Jan 2017 06:18:31 EST ID:LnHMc7oC No.56750 Ignore Report Reply
damn they're all just trying to sound smarter than each other and it's kind of taking away from learning about the whole thing

Star Wreck Ignore Report View Thread Reply
Roger Penrose - Thu, 01 Dec 2016 05:49:18 EST ID:eoz06Vb6 No.56698
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Finnish SciFi..


Kessler syndrome, ablation cascades? Ignore Report View Thread Reply
Concerned Galactic Citizen Commission - Mon, 14 Nov 2016 09:20:43 EST ID:1q2X8R/n No.56657
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Our planet has a steadily growing shell of orbital debris. This space junk is most concentrated in low earth orbit band. Currently there are somewhere over 1,100 active Gov't and private satellites in orbit, as well as over 2000 that have ceased functioning.
That's just the satellites, as it is estimated that there are over 600,000 pieces of bullshit between 1 and 10 CM just waiting to blow a bunch of holes in any given mission.
Now, if a large enough object were to collide in LEO, or some kind of explosion, these debris objects will begin colliding, creating shrapnel, and impacting MORE objects in a runaway feedback reaction.
This gives us a number of problems, the first being that it totally kills any launch viability for the foreseeable future as well as destroying all the satellites we already have in orbit. The other major problem is that as these thousands upon thousands of objects get kicked around much like atoms in a nuclear chain reaction, a good number of them will de-orbit and enter earth atmosphere causing heating due to air friction. That is bad for obvious reasons.
So /sagan/ how do we take preventative actions against this? Do we even need to worry? what would a post-cascade earth be like?
4 posts omitted. Click View Thread to read.
William Fowler - Wed, 16 Nov 2016 13:32:50 EST ID:YHjXylC8 No.56663 Ignore Report Reply
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I wanted to like that so much just for the realistic setting, but holy fuck the dialogue, characters, and unnecessary cutesy Japanese shit randomly crammed in is just too cringeworthy.
It's just highschool drama, but japanese and in space.
William Lassell - Sun, 20 Nov 2016 04:15:45 EST ID:tQX5ylFX No.56664 Ignore Report Reply
the high school shit gets real BTFO later on. it's part of the arc deal with it for a few eps
Mike Brown - Mon, 21 Nov 2016 10:03:54 EST ID:89x/mOqK No.56669 Ignore Report Reply
lookin pretty clean on google maps

Black hole instead of a planet x? Ignore Report View Thread Reply
John Riccioli - Mon, 17 Oct 2016 18:06:57 EST ID:eY06FJul No.56529
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Wouldn't it be more likely that a [stationary?] black hole is accounting for the gravitational effects thought to be responsible by planet x?
9 posts and 3 images omitted. Click View Thread to read.
William Lassell - Thu, 03 Nov 2016 16:21:01 EST ID:OXINl/7g No.56617 Ignore Report Reply
No, because black holes are rarer in the universe than planets, and a black hole with a small enough mass to cause those effects but without eating the rest of the Kuiper Belt and Oort cloud would be pretty hard to form in the first place. And if it did form, the supernova that caused it would have blasted the rest of the solar system to bits.
Russel Hulse - Thu, 03 Nov 2016 17:35:06 EST ID:eY06FJul No.56620 Ignore Report Reply
William Lassell - Fri, 04 Nov 2016 08:14:50 EST ID:FBGYqnRT No.56634 Ignore Report Reply
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MOTHERFUCKING ALIEREMS! Ignore Report View Thread Reply
George Herbig - Fri, 28 Oct 2016 17:32:07 EST ID:rszf0FN0 No.56560
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I can't believe no one has posted this yet:

TL;DR: We looked at a bunch of stars and found 234 -- that's right, two-hundred and fucking thirty fucking four -- stars that appear to have aliens trying to contact us with optical beams.

Go nuts.
5 posts and 1 images omitted. Click View Thread to read.
George Hale - Wed, 02 Nov 2016 23:34:33 EST ID:6+AQCLDz No.56613 Ignore Report Reply
Agreed, probably more likely it's a yet-to-be understood stellar phenomenon, I mean would aliens seriously spend the time and resources necessary to modify STARS just to send messages? There has to be more efficient methods of stellar communication than modifying an entire fucking star. Like just the amount of engineering to construct a device able to modulate a stars light output seems retardedly complex for communication
Thy being said, maybe it is aliens and the fluctuations in signals has to do with some sort of Dyson sphere like device, not ruling it out. Just saying that aliens are PROBABLY not trying to talk to us by fucking with stars' outputs
Russel Hulse - Thu, 03 Nov 2016 17:34:05 EST ID:eY06FJul No.56619 Ignore Report Reply
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Man, I just wanna chill with some ATLiens
Henrietta Levitt - Thu, 03 Nov 2016 19:37:16 EST ID:rszf0FN0 No.56621 Ignore Report Reply
Ways to change the spectral qualities of a star:
-pass a prism in front of it
-pass a planet with a spectrally modulated atmosphere in front of it (fancy prism.)
-drop mass with a different spectrographic profile than hydrogen or helium into it
-ignite mass with the desired spectrographic profile with a probe in the photosphere
-like I said before, just send a laser beam with different spectral properties in the same direction as photons from the star are travelling
All of those things would be trivial for a 1K civilization. Does that mean it is aliens? No. But we can't rule it out just because the method seems exotic. It might be hugely practical. I mean, the only thing they can see about our system is the star too, right? If we wanted to send them a message, and knew nothing about whether they are looking for radio signals or anything, the one thing we know they can see about us is our star, so if it can be used to send a message, why not?

If you flush a toilet Ignore Report View Thread Reply
The Boat - Thu, 20 Oct 2016 18:56:39 EST ID:P9AJW3+2 No.56545
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In the northern hemisphere vs the Southern Hemisphere will the rotation be different? / how is this effected by these new low flow toilets?

>side note thanks a lot Al Gore now when I go to del taco I have to flush like 20 times... thanks a lot
3 posts omitted. Click View Thread to read.
Edward Barnard - Sat, 22 Oct 2016 20:55:52 EST ID:Kz5Q207u No.56550 Ignore Report Reply
Shit, didn't see that someone already said the last bit of my post in this post:
The Boat - Sun, 23 Oct 2016 00:16:26 EST ID:UZoVrGk1 No.56551 Ignore Report Reply
So like we don't vibrate, right?
Joseph Taylor Jr. - Sun, 23 Oct 2016 23:44:22 EST ID:u7UMnSpi No.56553 Ignore Report Reply
i just hope that the poop goes away

Is colonizing space really a good idea? Ignore Report View Thread Reply
Vera Rubiin - Thu, 13 Oct 2016 22:44:38 EST ID:kkqIA5n0 No.56515
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There are more than enough resources on Earth to feed and cloth and house the entire world population several times over, but people are still starving and homeless due to our greed and incompetence. We can't make phones that don't blow up or cars that don't drive themselves into a wall. We're still dicking around with fossil fuels and nuclear reactors and steam turbines when we have a natural self-sustaining fusion reactor in the sky that could power the whole planet for millions of years if we just put more research into making better solar cells and superconducting materials and large-scale energy storage. With all our intelligence and resources, we can't make shit work on a planet that gives us everything we need, how the hell are we going to survive on a hostile world where just making food to eat and water to drink and air to breathe is a massive costly endeavor, and one tiny malfunction in our machines will result in horrible catastrophe and death? Is mankind really ready to live in space?
9 posts omitted. Click View Thread to read.
John Wheeler - Mon, 17 Oct 2016 16:56:39 EST ID:rszf0FN0 No.56528 Ignore Report Reply
Also on that list you won't see Hawking's Breakthrough Starshot project.
Musk's SpaceX and Bezo's BlueOrigin get all the press because everyone likes the idea of billionaires having a pissing match in space, but private space industry is growing very rapidly and many of the 'visionary' founders are doing it expressly because of their understanding of humanity's predicament being stuck on earth.
Arthur Eddington - Wed, 19 Oct 2016 12:06:23 EST ID:3t/weoS/ No.56543 Ignore Report Reply

NASA's new orbital craft, Orion, is supposed to be capable of manned Lunar missions. Shit's really happening now that the tech is moving beyond the bootstrap suicide missions of the 60/70ies, we just don't hear much of it because the public is so disinterested.

The West ain't gonna let China's space ambitions go uncontested though, so expect more ambitious state-level missions in the future.
Arno Penzias - Sat, 22 Oct 2016 17:05:33 EST ID:KgKlYmGv No.56548 Ignore Report Reply
You know, OP, you say we have all the resources here on Earth, yet still there's a lot of people living a life of distress due to lack of things and violence. You say we could fix it all, only if everybody started being logical and humane.
But therein lies the problem - it's just that difficult to change humans on that level. So difficult in fact, that it will probably be easier to build a spaceship, living pods and all that's necessary and send it all to another planet with like-minded people that are focused on one goal - making it work there.

In the sense of the mission, the monetary cost is completely irrelevant. 500 years from now nobody will give a shit about how much it cost. Even if there are failures and people will die, it only makes sense for us to keep reaching out there. Once any life arises, it wants to reach out as far as it can.

I don't think mankind really is ready to live in space, until we actually do it and get ready doing it.

balck on black crime part2 Ignore Report View Thread Reply
Bernard-Ferdinand Lyot - Thu, 13 Oct 2016 22:29:28 EST ID:XnHvuJOm No.56514
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do you think it would ever be possible for 2 black holes to meet? they say they are growing.. which makes it highly probably they will have a meeting one day.

i don't think anything special would happen other than they merge basically. but i had been thinking because of what they eat, what if one day a black hole has consumed to much...

like a pressure bomb, eventually it'll all be to much. what do you think
5 posts omitted. Click View Thread to read.
Johannes Kepler - Tue, 18 Oct 2016 20:38:53 EST ID:Kz5Q207u No.56536 Ignore Report Reply
You realize we confirmed gravitational waves when LIGO detected the waves caused by two black holes coming together and eventually combining, right?
George Airy - Tue, 18 Oct 2016 22:05:52 EST ID:y/fkgY/C No.56537 Ignore Report Reply
I posted a thread about that when it happened. This board is so fucking slow, it's still there >>56038
Henrietta Levitt - Wed, 19 Oct 2016 00:22:46 EST ID:rszf0FN0 No.56538 Ignore Report Reply
But that presumes there is an unlimited amount of radiation in the interstellar medium. By the time black holes are evaporating en masse, all matter will already have fallen into black holes, so there's no way it could replenish itself with ambient radiation.

Truth Ignore Report View Thread Reply
Edward Barnard - Tue, 20 Sep 2016 10:12:23 EST ID:+4KamMvj No.56439
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>If the universe was born from a white hole it solves everything.
if black holes turn into white holes and birth new universes, that means holographic universe theory is real, multiverse is real (every black hole is its own universe), every single equation is solved, if science simply realized that it was not a singularity but rather a white hole.
>Our universe is inside a white hole, or event horizon.
>Looking at a star 90 million lightyears away is like looking at the star as it was 90 million years ago. is it possible we have not detected life, as we can only view stars in the past - and not as they currently exist?

For example, the big bang theory says the universe started as a singularity. But scientists have no satisfying explanation for how such a singularity might have formed in the first place.

If our universe was birthed by a white hole instead of a singularity, Poplawski said, "it would solve this problem of black hole singularities and also the big bang singularity."

Wormholes might also explain gamma ray bursts, the second most powerful explosions in the universe after the big bang.

Gamma ray bursts occur at the fringes of the known universe. They appear to be associated with supernovae, or star explosions, in faraway galaxies, but their exact sources are a mystery.

Poplawski proposes that the bursts may be discharges of matter from alternate universes. The matter, he says, might be escaping into our universe through supermassive black holes—wormholes—at the hearts of those galaxies, though it's not clear how that would be possible.

"It's kind of a crazy idea, but who knows?" he said.
7 posts omitted. Click View Thread to read.
Vesto Slipher - Thu, 29 Sep 2016 13:56:14 EST ID:KgKlYmGv No.56499 Ignore Report Reply
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I know you\re trolling but since it\s a chilled out night and im really laid back i'll take the bait cause reading them got me entertained.
While reading this got me thinking, do the people that write these up actually believe these "facts" or they just go with the thread for the kick of it. Or maybe they're just 15, eager to belong into some kind of social group and wanna feel special/entitled, with their mind not exactly made up what they're experiencing.

Basically the first 18 something disregard gravity (pic related).

19. is a funny one, based on a 16th century argument that stars in the sky should be visibly moving "back and forth" since we're on solar orbit and move somewhat closer and further to them.
20. says a cannon shot straight up should land slightly west because by the time the ball falls back the earth and the cannon should've moved east due to earth's spinning. except the atmosphere spins with the planet.

the rest just made no sense or were downright dumb and i got bored
Hannes Alven - Thu, 29 Sep 2016 15:36:29 EST ID:tQX5ylFX No.56500 Ignore Report Reply
Maybe some one should also tell them that gravity is non-shperical. but the planet is. Might cause some explosions of rage.
Maximilian Wolf - Sun, 16 Oct 2016 17:47:26 EST ID:f/Tl+D5o No.56524 Ignore Report Reply
it's centered on a couple, man and woman in space holding us together, there's a black hole that gets turned into white when there's enough gathered to break the threshold, the quantum dynamics are designed so that the people are part of the equation.

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