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

military equipment

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- Sat, 15 Apr 2017 19:18:53 EST /DjOl0ut No.56916
File: 1492298333159.png -(382147B / 373.19KB, 743x748) Thumbnail displayed, click image for full size. military equipment
i understand the weight involved but their are multiple ways to accomplish this

(also i may be missing information on certain things)

with the miscellaneous equipment that is obsolete or ... take an electromagnet to swoop the pieces and clean the atmosphere.. *(my mind was on this)

secondly i think that while it may be applicable to take a large hook and anchor to something to even make some kind of "elevator" - to utilize this to even lift some military equipment - prefabricated buildings... almost anything

a tank is something that came to mind... a submarine would almost work also.. in zero gravity

plus with that.. it comes to understand the problems with entanglement... but also to cheaply move things from station to station on a rope ... much information should be held... but again i don't know who reads these forums

but why not
6 posts omitted. Click View Thread to read.
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Alan Guth - Tue, 25 Apr 2017 01:10:37 EST M/g1akbS No.56924 Reply
what the actual hell am I reading in this thread?

EM DRIVVVVVVVVVVE

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- Sun, 20 Nov 2016 17:41:15 EST rszf0FN0 No.56665
File: 1479681675546.jpg -(8863B / 8.66KB, 280x180) Thumbnail displayed, click image for full size. EM DRIVVVVVVVVVVE
HOLY SHIIIIIIIIIIIIIIIIIII

So apparently after decades of people trying to debunk it and call it pseudoscience, NASA has confirmed the Shawyer EM Drive actually works, producing thrust via microwaves using no propellant, apparently violating the principle of equal and opposite reaction:
http://www.sciencealert.com/it-s-official-nasa-s-peer-reviewed-em-drive-paper-has-finally-been-published

The authors suggest that perhaps the long-dead pilot-wave/Bohmian interpretation of Quantum Mechanics is now a contender again thanks to this new evidence. The microwaves 'push off' of the quantum vacuum, preserving Newton. But if pilot-wave is the true QM, that means not only that alternate realities exist, but that we see them as real effects in our world! (i.e. in the generation of interference patterns in the double-slit experiment. But surely this is but the most minor influence this generates, and probably only the easiest to notice, since in Bohmian mechanics the wave function that governs any given particle system spans the entire universe.)

NASA's totally unoptimized EM drive could get us to Mars in a tithe of the time of even Musk's proposal, with a ship a fraction of the mass ('cause no propellant.) It's bottle popping time /sagan/!
64 posts and 14 images omitted. Click View Thread to read.
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Kip Thorne - Thu, 02 Feb 2017 03:47:10 EST 10QI3ruX No.56777 Reply
>>56758
Damn, all I wanted was unlimited energy and mankind to conquer the universe. This whole thing sounded so star trek at first, but now all my hopes are getting fucking dashed. I just wanted to travel the universe, is that so bad?
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Henry Russell - Tue, 28 Feb 2017 15:32:15 EST 3rYafGRG No.56844 Reply
1488313935134.jpg -(29857B / 29.16KB, 600x600) Thumbnail displayed, click image for full size.
Sounds pretty abstract.
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Henrietta Levitt - Sat, 13 May 2017 15:28:22 EST 8y/A2lll No.56937 Reply
so what you are telling me is humans are going to travel the stars powered by

>implying

to seed their memes across the galaxy?

thowing up in your helmet

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- Thu, 02 Mar 2017 18:37:45 EST yfFUwunc No.56847
File: 1488497865596.gif -(2064671B / 1.97MB, 250x256) Thumbnail displayed, click image for full size. thowing up in your helmet
Anyone here trying to become an astronaut? I've always wondered what working in space would be like and how bright the stars would shine. Anyone else/
5 posts and 1 images omitted. Click View Thread to read.
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Anders Angstrom - Fri, 31 Mar 2017 02:29:16 EST UUK/Eqa/ No.56898 Reply
>>56894
fuck all that shit ive been watching vids, i got this shit bro hold my beer.
>>
Antony Hewish - Thu, 20 Apr 2017 15:05:50 EST yfFUwunc No.56922 Reply
>>56894 YAAAAAAAAAAAAAAAAAAAAAAAAAAAAY good job and don't die
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Giuseppe Piazzi - Wed, 10 May 2017 05:47:05 EST ckzzwmzc No.56935 Reply
1494409625228.png -(245755B / 240.00KB, 556x798) Thumbnail displayed, click image for full size.
>>56848
>not getting life extending cybernetics that will be real in our time to get a ride to space later.

I think realisticly a lot fo people are going to die soon so survive that and any one left will be go for space, it will be needed.. it's really not that hard you just can't ever fuck up once.

Accelerating Expansion of the Universe

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- Thu, 23 Mar 2017 18:41:02 EST pYbb5iMl No.56876
File: 1490308862190.gif -(46487B / 45.40KB, 735x625) Thumbnail displayed, click image for full size. Accelerating Expansion of the Universe
So if new space is created every now and then at greater speed and making them galaxies recede and shift to the reddest part of the spectrum, how much time until we're converted into a gaseous fading cosmic entity? How do we even perceive space? How would we perceive space expanding when it eventually gets fast enough to notice?
14 posts and 1 images omitted. Click View Thread to read.
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Ejnar Hertzprung - Wed, 12 Apr 2017 00:12:46 EST TSBuLBRU No.56910 Reply
>>56903

how can anything ever overcome the force of gravity? isn't its reach limitless?
>>
Daniel Kirkwood - Wed, 12 Apr 2017 16:18:05 EST 7jcVAyVz No.56911 Reply
>>56910
But it's power isn't limitless. Consider that the reach of the power of the sun's gravity is much stronger than the earth's, but because you are much closer to the earth, the sun's gravity doesn't pull you into it (well, it does in that it keeps the earth in orbit, but you see my point, that just because a force extends infinitely doesn't mean it isn't weaker at any given place than some other force.)

Contact

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- Tue, 07 Mar 2017 10:24:21 EST d9ijPul/ No.56851
File: 1488900261387.png -(5339B / 5.21KB, 1914x936) Thumbnail displayed, click image for full size. Contact
Say we could float around and travel in space like a super saiyan god: Could we create scouters which could contact people with the same scouter intergallactically?
15 posts and 1 images omitted. Click View Thread to read.
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Carl Seyfert - Wed, 22 Mar 2017 06:55:46 EST d9ijPul/ No.56871 Reply
>>56870
yeah the bad ones without a large influx to source from.
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Johann Encke - Sun, 09 Apr 2017 04:20:44 EST eKHOYimM No.56908 Reply
>>56870
If it does up it wasn't a well, it was a just hollow.

Dark matter matters

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- Wed, 09 Nov 2016 03:09:08 EST zHoQtF+M No.56645
File: 1478678948074.jpg -(23713B / 23.16KB, 259x450) Thumbnail displayed, click image for full size. Dark matter matters
There's 10 times more matter in the universe than we thought:
http://blogs.discovermagazine.com/d-brief/2016/10/13/the-universe-is-20-times-more-vast-than-we-thought/#.WCLTmjU2thE

A natural law for rotating galaxies:
http://www.physicscentral.com/buzz/blog/index.cfm?postid=5308541299875990673

And finally, matter causes entropy displacement which accounts for the dark matter effect:
https://arxiv.org/abs/1611.02269

TL;DR, we found our missing mass, we can see that rotation speed varies with the amount of visible matter, and with a better understanding of gravity, the whole concept and purpose of dark matter is bunk.
23 posts and 5 images omitted. Click View Thread to read.
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George Herbig - Tue, 28 Feb 2017 21:08:22 EST 7jcVAyVz No.56845 Reply
>>56843
If a0 is equal to the speed of light divided by the radius of the universe, since the radius of the universe is equivalent to the time since the big bang and thus always increasing, presumably this also means the acceleration constant decreases overtime, which means the same amount of force creates more acceleration, right? (thus accelerating expansion) is this an intentional aspect of MOND? Why didn't they predict an accelerating universe beforehand if so?
>>
John Bahcall - Wed, 01 Mar 2017 19:11:28 EST e0oA2mYt No.56846 Reply
>>56843
Wrote a big response but the board swallowed it twice. Milgrom is talking shit, MOND doesn't bridge anything with the largest scales. It fails if you look at anything beyond galaxies. Galaxy clusters, Milgrom admits you need dark matter. Standard cosmology needs dark matter for structure formation but MOND doesn't do structure formation correctly at all, the extra gravity fucks things up. Lastly there is no MOND cosmology, previous attempts to predict the cosmic microwave background were abandoned after they became incompatible with the observations. The only thing MOND does well is galaxies which it was designed to do, it was a model to fit the data, not derived.

Lastly the radius of the universe is a number derived from cosmology, if you change the cosmology to MOND it's not the same. The point about a_0 makes no sense.

>>56845
MOND makes gravity stronger on large scales so that would increase the pull of gravity between galaxies, increasing the deceleration. MOND doesn't have a cosmology so it can't really make these predictions.

Europa Mission

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- Thu, 18 Aug 2016 23:04:09 EST Y3T9nNnZ No.56318
File: 1471575849136.jpg -(65153B / 63.63KB, 320x380) Thumbnail displayed, click image for full size. Europa Mission
Anyone else hyped for the Europa mission?

https://www.youtube.com/watch?v=GqTaDCt_F1Y

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.
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Astrobiology Student - Wed, 23 Nov 2016 16:14:22 EST UuJsarOA No.56671 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!

Teaching an astronomy class

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- Tue, 24 Jan 2017 17:29:35 EST CtuYLr3e No.56766
File: 1485296975966.jpg -(27754B / 27.10KB, 300x300) Thumbnail displayed, click image for full size. Teaching an astronomy class
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.
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Joseph Taylor Jr. - Fri, 10 Feb 2017 20:16:33 EST 4yc+FRR6 No.56782 Reply
1486775793366.jpg -(719456B / 702.59KB, 1920x1200) Thumbnail displayed, click image for full size.
>>56767
That just sent me on a fun little side quest, thank you.
>>
Joseph-Louis Lagrange - Thu, 16 Feb 2017 12:33:23 EST M/g1akbS No.56786 Reply
Well, OP, How did it go??
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George Gamow - Thu, 16 Feb 2017 22:51:43 EST U3oyeBRN No.56787 Reply
1487303503131.jpg -(216290B / 211.22KB, 1920x1080) Thumbnail displayed, click image for full size.
>>56766

Random Space Fact youtube videos from Dr. Bruce Betts


Aliens

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- Sun, 16 Mar 2014 20:44:47 EST Jzd78Ub0 No.53216
File: 1395017087604.jpg -(188698B / 184.28KB, 1200x1200) Thumbnail displayed, click image for full size. Aliens
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.
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Kip Thorne - Thu, 02 Feb 2017 03:39:11 EST 10QI3ruX No.56776 Reply
>>56771
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.
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Friedrich Bessel - Fri, 10 Mar 2017 12:22:11 EST bbe1VMqZ No.56856 Reply
1489166531731.jpg -(1201438B / 1.15MB, 2880x1800) Thumbnail displayed, click image for full size.
Well while we no-bump it back to oblivion maybe we should post some pictures.

Gas Station

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- Sat, 17 Dec 2016 00:07:43 EST 3JvngLEe No.56726
File: 1481951263097.jpg -(106773B / 104.27KB, 720x480) Thumbnail displayed, click image for full size. Gas Station
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.
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Stephen Hawking - Sat, 14 Jan 2017 23:54:55 EST veR+j0aW No.56759 Reply
hey man I'll take a pack of zigzag blues, and a lighter too.

Directly Imaging Planets

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- Sat, 12 Nov 2016 10:31:11 EST L+GCCa0j No.56654
File: 1478964671170.jpg -(25943B / 25.33KB, 577x619) Thumbnail displayed, click image for full size. Directly Imaging Planets
Hey guys. Good Morning. We can see other planets directly now.

http://www.universetoday.com/131903/princeton-team-directly-observes-planets-around-nearby-stars/

https://youtu.be/tbu1l672uLc?t=2171

Now we can start getting spectra and figuring out what's out there.
1 posts omitted. Click View Thread to read.
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Heinrich Olbers - Mon, 14 Nov 2016 08:54:36 EST 1q2X8R/n No.56656 Reply
>>56654
This news is really exiting, and im glad you posted this but that video is private you massive wonk
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Edmond Halley - Sun, 08 Jan 2017 06:18:31 EST LnHMc7oC No.56750 Reply
>>56658
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


Kessler syndrome, ablation cascades?

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- Mon, 14 Nov 2016 09:20:43 EST 1q2X8R/n No.56657
File: 1479133243854.jpg -(102142B / 99.75KB, 640x640) Thumbnail displayed, click image for full size. Kessler syndrome, ablation cascades?
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.
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William Fowler - Wed, 16 Nov 2016 13:32:50 EST YHjXylC8 No.56663 Reply
1479321170646.jpg -(113024B / 110.38KB, 900x506) Thumbnail displayed, click image for full size.
>>56661
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.
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William Lassell - Sun, 20 Nov 2016 04:15:45 EST tQX5ylFX No.56664 Reply
>>56663
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 89x/mOqK No.56669 Reply
lookin pretty clean on google maps

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