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420chan is Getting Overhauled - Changelog/Bug Report/Request Thread (Updated April 10)
Grey goo Ignore Report View Thread Reply
Karl von Weizsacker - Thu, 23 Jun 2016 09:30:57 EST ID:ityObSKZ No.56249
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Do you think somewhere grey goo is destroying everything?
2 posts omitted. Click View Thread to read.
Alan Guth - Fri, 24 Jun 2016 16:18:56 EST ID:3t/weoS/ No.56253 Ignore Report Reply

All you need is to program the goo to build Von Neumann probes from asteroids and them using to spread.

Can't imagine any species would do such a thing but hey humans are crazy enough for nukes and M.A.D. so who knows?
Kiyotsugu Hirayama - Sun, 26 Jun 2016 04:02:45 EST ID:sMBupno1 No.56254 Ignore Report Reply
goo cant melt steel beams
William Fowler - Thu, 30 Jun 2016 04:20:28 EST ID:x7oDvr/y No.56255 Ignore Report Reply
Your steel beams have been assimilated; all is goo, all is good.

Living Organisms as White Holes Ignore Report View Thread Reply
emily - Sat, 04 Jun 2016 23:40:16 EST ID:6lTk9kB6 No.56212
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I have deduced that all living organisms are White Holes. I call this the Living Organisms as White Holes Theory.

Evidence :
  1. when the cells of a living organism divide, it emits minute levels of light.
  2. living organisms create and excrete their own matter.

Please help me compound on this theory I want to talk to a real scientist. I have more to add but I need to go do chores. More later, like being four dimensions opposite of zero. (thought. The final frontier)
23 posts and 1 images omitted. Click View Thread to read.
Walter Adams - Tue, 14 Jun 2016 22:16:50 EST ID:AR+FDxN1 No.56245 Ignore Report Reply
I used to think that maybe a life form is like a bubble of negative entropy. All around the universe matter is getting less organized as systems disperse their energy, but in life matter harnesses energy to organize itself temporarily. But I was wrong. It doesn't make any sense to think of life as a closed system. We radiate so much heat and excrete so much shit that there isn't any logical boundary to call a bubble. There is temporary organization, but it is constantly part of the greater universe. Everything is causally linked. Especially EM waves. Photons are being absorbed and radiated by your cells. In a trippy way, doesn't that make you a physical part of your surroundings?
Jan Hendrik Oort - Mon, 20 Jun 2016 16:32:53 EST ID:3t/weoS/ No.56247 Ignore Report Reply

As far as I understand entropy, clustering of energy like in the form of planets or lifeforms is in fact a part of it. A zero-entropy universe would be stable, or in other words uniform.
Russel Hulse - Tue, 21 Jun 2016 16:44:04 EST ID:pjhpxsvC No.56248 Ignore Report Reply
1466541844221.gif -(919891B / 898.33KB, 200x200) Thumbnail displayed, click image for full size.
I wouldn't say that all living organisms have white holes, but caucasian girls certainly have white holes, if you know what I mean...

Biology is one hell of a science.

From the ISS Ignore Report View Thread Reply
Joseph von Fraunhofer - Wed, 27 Apr 2016 13:56:07 EST ID:an1HFu9H No.56166
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I just came down to give you these /sagan/
6 posts and 6 images omitted. Click View Thread to read.
Joseph von Fraunhofer - Wed, 27 Apr 2016 14:03:10 EST ID:an1HFu9H No.56173 Ignore Report Reply
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Georges-Henri Lemaitre - Thu, 02 Jun 2016 18:06:00 EST ID:YHjXylC8 No.56205 Ignore Report Reply
Why are they all perfectly looped?
Karl von Weizsacker - Sat, 04 Jun 2016 01:59:24 EST ID:gk6gFOAI No.56210 Ignore Report Reply
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If you look closely it actually fades to the beginning of the clip just before it restarts. Pretty clever imo.

poll time Ignore Report View Thread Reply
Johannes Kepler - Sat, 06 Dec 2014 23:06:10 EST ID:Zbe0PVOU No.54770
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Do you pronounce it "yur anus" or "yuran us".
37 posts and 6 images omitted. Click View Thread to read.
Caroline Herschel - Sun, 29 May 2016 15:16:47 EST ID:66iQx6Zw No.56199 Ignore Report Reply
Your anus.

As in "I can see the ring around your anus"
Annie Cannon - Mon, 30 May 2016 15:30:24 EST ID:tQX5ylFX No.56200 Ignore Report Reply
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You should probably wipe Uranus.
Edward Barnard - Tue, 31 May 2016 13:07:46 EST ID:3t/weoS/ No.56201 Ignore Report Reply

I've heard it's more gasy than moist and nutty though.

Its happening! Ignore Report View Thread Reply
Jocelyn Bell - Wed, 13 Apr 2016 05:21:04 EST ID:zo6zX05v No.56151
File: 1460539264849.jpg -(207439B / 202.58KB, 950x534) Thumbnail displayed, click image for full size. 207439
7 posts omitted. Click View Thread to read.
Cecelia Payne-Gaposchkin - Tue, 26 Apr 2016 21:14:40 EST ID:r6jFVsbC No.56163 Ignore Report Reply
Why would they need to? I think idea is more or less for a flyby.
Irwin Shapiro - Wed, 27 Apr 2016 08:41:53 EST ID:qxykRiwE No.56165 Ignore Report Reply
The Mote In God's Eye?
Edward Pickering - Wed, 27 Apr 2016 19:37:24 EST ID:/CR0/A7p No.56175 Ignore Report Reply

But long term, this would be cheaper than combustion. This would also work for manned missions.

You'd have to start decelerating 50% of the way there, if they're doing both with lasers. But they'd probably just use combustion to decelerate, which would significantly reduce weight too. Since it's for stopping and not the initial thrust. So I think that might work.

I realize it works great if you're just sending things out, but why develop this huge and incredibly useful ability and just use it to send out a dozen more voyagers?

NASA Mars announcement Ignore Report View Thread Reply
Stevie Nothing - Mon, 28 Sep 2015 04:30:10 EST ID:piwlLnxF No.55700
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>The biggest hint is that one of five speakers at the news briefing will be Lujendra Ojha from the Georgia Institute of Technology in Atlanta. Ojha made headlines in 2011 when he co-authored a study suggesting that liquid water flowed during the warmer months on Mars.

>He said at the time that, by accident, he noticed irregular features in images taken for another study of gullies in Mars craters. Using a computer algorithm to monitor changes over time, he began to see "finger-like" features and streaks that strongly resembled water. They would appear during warmer seasons and die away during cooler seasons. He has conducted research ever since, to determine if it is definitely water.
20 posts and 1 images omitted. Click View Thread to read.
Viktor Ambartsumian - Sat, 27 Feb 2016 02:15:03 EST ID:tQX5ylFX No.56096 Ignore Report Reply
You put a 4 month old thread up for that? Good one bro!
Friedrich von Struve - Sat, 27 Feb 2016 14:02:08 EST ID:pgmu6mYO No.56101 Ignore Report Reply
Why is everyone on this board such a bitch?
Joseph von Fraunhofer - Sun, 10 Apr 2016 08:33:26 EST ID:/mLbrve3 No.56150 Ignore Report Reply

So New Horizons.. Ignore Report View Thread Reply
Joseph Lockyer - Sun, 05 Jul 2015 17:48:57 EST ID:LNoHYvqf No.55473
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Just went safe mode, for seemingly no reason. Either NASA saw something that they don't want us finding out, or some kind of aliens are trying to prevent their discovery. I mean, Pluto seems completely, artificially placed. It orbits on an entirely different plane than the rest of the planets in the solar system. I'm not a /tinfoil/ faggot, and I'm not talking about "greys". I want to have a serious discussion on the possibility of this, because I got super stoked about seeing high-res pictures of Pluto after reading about the last few developments, and this just seems too coincidental.
>pic related, newest pictures of Pluto.
21 posts and 8 images omitted. Click View Thread to read.
Paul Goldsmith - Sat, 20 Feb 2016 17:11:17 EST ID:NwG2VzXF No.56071 Ignore Report Reply

Tadashi Nakajima - Thu, 31 Mar 2016 08:16:57 EST ID:Kz5Q207u No.56145 Ignore Report Reply
>We have exactly one datapoint for how rationally a species capable of space flight behaves, and it's "not at all".
I know his claim is baseless, but your implication is a logical fallacy. A lack of evidence showing that species capable of space flight behave rationally is not evidence that none (can) behave rationally. Not to mention there's a huge difference between space travel at the distances required to reach us/other planets supporting sentient life, and just being able to make it into space. We don't have even a single data point at all in regards to the level of rational behavior a species capable of space flight at those distances possesses.

Your argument is shit. His might be shit too, but he's not positing that pluto is an alien space station that houses blue-visioned aliens and serves as a research lab where they perform tests on humans. Therefore, your argument is shit and your criticism of his criticism is retarded.
Tadashi Nakajima - Thu, 31 Mar 2016 08:17:46 EST ID:Kz5Q207u No.56146 Ignore Report Reply
rationally is not evidence that none (can) behave rationally... or necessarily would*

Where's The Flux Ignore Report View Thread Reply
Edwin Hubble - Fri, 25 Mar 2016 03:54:23 EST ID:t1vMK9Uc No.56140
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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?
Robert Wilson - Fri, 25 Mar 2016 08:57:25 EST ID:Lg4ZGohn No.56141 Ignore Report Reply
Here's some light curves for anyone interested.
And this analysis helps to understand the topic:

Moonbase 3 Ignore Report View Thread Reply
Ejnar Hertzprung - Fri, 12 Feb 2016 11:23:14 EST ID:+eqmThO1 No.56048
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Ran across this and thought /sagan/ would appreciate it.


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.
Jocelyn Bell - Sun, 13 Mar 2016 13:09:46 EST ID:jMMVdMaT No.56124 Ignore Report Reply
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Star Cops (BBC, 1987)

Failed British cop show IN SPACE, with some of the hardest SF ever seen.
Jocelyn Bell - Sun, 13 Mar 2016 13:23:18 EST ID:jMMVdMaT No.56125 Ignore Report Reply
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Starcom: The U.S. Space Force (1987)

Kind of like if G.I. Joe hired consultants from N.A.S.A..
Russel Hulse - Tue, 22 Mar 2016 17:15:13 EST ID:AonVP/Hg No.56136 Ignore Report Reply
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duuuude, found a torrent of the manga and it kicks ass, highly recommended
thanks a lot!

I hate the fermi paradox Ignore Report View Thread Reply
Otto Struve - Sat, 30 Jan 2016 02:53:49 EST ID:Y6cuAVAn No.55979
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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.
Joseph Taylor Jr. - Tue, 15 Mar 2016 12:34:15 EST ID:YHjXylC8 No.56127 Ignore Report Reply
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 ID:YHjXylC8 No.56128 Ignore Report Reply
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*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 ID:3t/weoS/ No.56130 Ignore Report Reply

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? Ignore Report View Thread Reply
John Wheeler - Sat, 12 Mar 2016 11:21:59 EST ID:D/M9znoO No.56118
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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.
William de Sitter - Sat, 12 Mar 2016 15:08:48 EST ID:pjhpxsvC No.56120 Ignore Report Reply
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 ID:D/M9znoO No.56121 Ignore Report Reply
The universe is weird and scary.
Thanks for answering my question
Kiyotsugu Hirayama - Sat, 12 Mar 2016 23:18:33 EST ID:D/M9znoO No.56122 Ignore Report Reply
whoops I should have replied to you and not the other guy lol
thought you were the same didnt check ID

Van Allen Belts Proven to be "to lethal to travel in" Ignore Report View Thread Reply
Allan Sandage - Wed, 20 Jan 2016 18:13:58 EST ID:sV+7XGwN No.55944
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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.


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?


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.
Kiyotsugu Hirayama - Fri, 26 Feb 2016 14:57:58 EST ID:bUVcT3Vi No.56092 Ignore Report Reply
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 ID:vB+y87GU No.56099 Ignore Report Reply
Then how did the Apollo astronauts get through them?
Friedrich von Struve - Sat, 27 Feb 2016 14:01:24 EST ID:pgmu6mYO No.56100 Ignore Report Reply
It's called space dipshit

LIGO Detects Gravitational Waves Ignore Report View Thread Reply
William Fowler - Thu, 11 Feb 2016 11:18:29 EST ID:y/fkgY/C No.56038
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>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.
Cecelia Payne-Gaposchkin - Thu, 18 Feb 2016 20:18:57 EST ID:415JX8nG No.56065 Ignore Report Reply

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 ID:fDZ3h+Vd No.56072 Ignore Report Reply
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 ID:Yyh+3hGH No.56073 Ignore Report 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.

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