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Harm Reduction Notes for the COVID-19 Pandemic

Fucking ECLIPSE thread!

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- Sun, 20 Aug 2017 15:50:15 EST KgS57XEk No.57006
File: 1503258615031.jpg -(263261B / 257.09KB, 1932x1932) Thumbnail displayed, click image for full size. Fucking ECLIPSE thread!
ECLIPSE THREAD MOFOS!

Come on! Get excited for this!

I got a cheap solar filter sheet and put it in front of my 300mm lens. Which is plugged into a 2x teleconverter. 600mm to grab the eclipse.

Took some test shots today and got to see some sunspots! Which are freaking cool (well, RELATIVELY cool...LOL!)

Post eclipse shit here people!
6 posts and 1 images omitted. Click View Thread to read.

Intergalactic Electromagnetism

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- Sun, 18 Feb 2018 06:53:57 EST tC4KRASE No.57199
File: 1518954837151.gif -(2096340B / 2.00MB, 400x354) Thumbnail displayed, click image for full size. Intergalactic Electromagnetism
Hey /sagan/,

Quick question for y'all. Currently we observe the universe to be expanding at an accelerating rate and no equations can account for the force behind this since all scientists tend to be looking at gravity alone. However, the electromagnetic force is something like 30 orders of magnitude stronger than gravity, and has the same inverse relationship to the square of the distance between the objects, meaning even at vast cosmic distances it should still be relevant, in fact MORE relevant, than gravity.

Maybe instead of "dark energy" it is simply the electromagnetic repulsion between galaxies who all gained like charges through the big bang or whatever and they simply move apart like two protons would?

Has this theory been debunked or seriously investigated?
12 posts and 2 images omitted. Click View Thread to read.
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Karl Jansky - Thu, 01 Mar 2018 22:21:30 EST PAGBpgJc No.57220 Reply
1519960890192.gif -(747912B / 730.38KB, 300x244) Thumbnail displayed, click image for full size.
>>57199
Inflation theory doesn't say that stuff in the universe is moving away from each other, rather that the space-time where the stuff resides is expanding, giving the red shifted appearance of most celestial objects. I'm not sure where you got the gravity thing from, as it's not really coming into play.
>>
Thomas Henderson - Fri, 16 Mar 2018 01:30:53 EST eygzYfFg No.57240 Reply
Place your bets dudes and dudettes.

Dark energy is:
1) something we haven't discovered yet
2) an error in our understanding of physics
3) cthulhu ftaghn ia ia ia ia tekeli

Red Dwarf ayy lmaos

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- Mon, 15 Jan 2018 13:34:12 EST y3vStdZD No.57154
File: 1516041252879.jpg -(66050B / 64.50KB, 1024x768) Thumbnail displayed, click image for full size. Red Dwarf ayy lmaos
In this thread ITT we discuss the habitability of red dwarf systems
Scientists have theorized that these planets could be habitable despite being tidally locked with their stars. They believe there would be enough convection between the light and dark sides to maintain oceans, an atmosphere etc.
I think it would be interesting how life would evolve on such a world, particularly intelligent life. Imagine how the material conditions of the world would affect culture, technological development, geopolitics etc.
https://en.wikipedia.org/wiki/Habitability_of_red_dwarf_systems
Discuss
10 posts omitted. Click View Thread to read.
>>
Charles Bolton - Tue, 13 Feb 2018 12:18:11 EST 4uIlxD// No.57190 Reply
>>57154

I feel like if life developed on any planet it would spread and adapt to all envitonments.

Imagine a planet with three wildly divergent patterns, in the hot, twilight, and dark sides.

Any intelligent ayyylmaos would want to access resources from the other zones, the technology and methods developed to survive and colonize the opposite side of their planet would translate well to space travel. The history of the conquest of their own planet would be fascinating.

What would it do to a society to have half the planet living in hostile conditions?

What if two separate races descended from entirely different trunks of an evolutionary tree that branched in the microbial era became sapient separately, isolated from each other by their wildly different environments?
>>
Charles Bolton - Tue, 13 Feb 2018 12:30:08 EST 4uIlxD// No.57191 Reply
>>57167
Jupiter has a magnetic field from its metallic hydrogen core. Gas giant's have moons big enough to hold an atmosphere, and the tidal forces from orbiting close to a gas giant have been observed to create geologic and weather activity.

Could Jupiter sized gas giant's exist close enough to a gas dwarf to be warm enough to evolve life? Would the magnetic field of such a hypothetical gas giant protect its moons?

Earth life hates radiation because it denatures proteins, a fundamental structure in all earth life, Earth life even uses proteins to store the information that makes evolution possible.

Are there any classes of molecules capable of the kind of structural and interactive diversity of proteins that aren't as vulnerable to radiation?
>>
Viktor Ambartsumian - Thu, 15 Feb 2018 03:10:20 EST m3P6k9jA No.57193 Reply
1518682220337.gif -(45588B / 44.52KB, 640x452) Thumbnail displayed, click image for full size.
>>57191
>Earth life hates radiation because it denatures proteins, a fundamental structure in all earth life
In the beginning, it hated oxygen because it oxidized proteins. It's not inconceivable that carbon-based life in in an environment with ionizing radiation could adapt to mitigate the damage and use the energy.
https://en.wikipedia.org/wiki/Radiotrophic_fungus

>Are there any classes of molecules capable of the kind of structural and interactive diversity of proteins that aren't as vulnerable to radiation?
All molecules are, under a few feet of water.

Private Space Industry can now reach Mars.

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- Tue, 06 Feb 2018 17:11:41 EST unNII3om No.57169
File: 1517955101747.jpg -(14848B / 14.50KB, 153x258) Thumbnail displayed, click image for full size. Private Space Industry can now reach Mars.
The Falcon Heavy launch was a success. There's a Tesla car now in transfer orbit to Mars, and this is a fact. Beyond how absurd that sounds, this actually means that a private actor now has the capability to put orbiters and more around Mars. Which means a huge step closer to putting people on the world.

Space-X has provien that they at least has the capability to reach the un-told numbers of asteroids passing through that range.
Is this Musk's actual end-game here? To capture some metal-heavy asteroid and bring it into low-Earth orbit for mining? I dunno, but still, the future is getting tangible as fuck.
8 posts and 2 images omitted. Click View Thread to read.
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Harlow Shapley - Thu, 08 Feb 2018 17:18:49 EST p73EfNkl No.57179 Reply
>>57177

the point of heavy is the recovery of the boosters (although the 3rd one did crash so more work needs to be done)
>>
Hannes Alven - Thu, 08 Feb 2018 19:31:02 EST NyLhIW/E No.57181 Reply
>>57177
But that's not the point of the Falcon Heavy, it was to become the largest lift capacity commercial rocket presently operated...which it now is. You'll have to wait until later this year for them to surpass the Saturn V with the Big Fucking Rocket, which absolutely could redo Apollo. (Also, imagine how much lighter we could make a modern Apollo mission with current materials and tech.)
>>
William Herschel - Fri, 09 Feb 2018 23:52:48 EST coC9H9eG No.57183 Reply
1518238368620.gif -(1620911B / 1.55MB, 654x360) Thumbnail displayed, click image for full size.
Starman is definitely a construction android.

That bell under the car sure had a lot of room for secret gear.

Mars is a hologram: we already live on Mars. Earth is long dead.

Juno Close-Up of Jupiter

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- Sat, 16 Dec 2017 14:49:08 EST unNII3om No.57129
File: 1513453748388.jpg -(117513B / 114.76KB, 1041x586) Thumbnail displayed, click image for full size. Juno Close-Up of Jupiter
https://www.nasa.gov/mission_pages/juno/images/index.html

These pictures alone are worth the 1 billion dollars of the mission.

Revolutionary new theory disproving gravity and our understanding of the cosmos

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- Sun, 26 Nov 2017 13:07:45 EST Wzm4xeu3 No.57104
File: 1511719665892.jpg -(70190B / 68.54KB, 1000x707) Thumbnail displayed, click image for full size. Revolutionary new theory disproving gravity and our understanding of the cosmos
https://www.youtube.com/watch?v=xDSS5k-105M

What if the heavens we have gazed in wonder for so long are not so vast...but in fact smaller than the landmass we inhabit?

Unlike the ridiculous flat earth theory, which makes no sense, this new theory makes a lot of sense, and not only that, it manages to combine science with religion in a rational, logical way.
8 posts and 2 images omitted. Click View Thread to read.
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Cecelia Payne-Gaposchkin - Wed, 06 Dec 2017 16:12:29 EST unNII3om No.57122 Reply
>>57121

Easy. Who would seriously put shit in a bag besides dog-owners?

Check mate nb
>>
Wilhelm Beer - Mon, 01 Jan 2018 12:27:22 EST eygzYfFg No.57141 Reply
Is this the "Elon Musk is Satan" guy that spammed /high/ full of his schizophrenic retard shit a few months ago?
>>
Nicolaus Copernicus - Mon, 05 Mar 2018 12:39:55 EST ej0yxAjW No.57230 Reply
I can here to check this out from a complaint thread on /420/ to see if it was true.. Gave me a good chuckle. Thanks 420chan.

Astronomy Club

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- Wed, 13 Sep 2017 12:02:26 EST dWt9NTso No.57017
File: 1505318546672.gif -(181264B / 177.02KB, 197x270) Thumbnail displayed, click image for full size. Astronomy Club
I'm trying to make an astronomy club but I don't know what it would be about or what to do. Everyone else who likes astronomy are just shy like me and we all refuse to talk. Logically I know that the club show be at night because astronomy but what do you think I should do at such a club. Thank you
2 posts omitted. Click View Thread to read.
>>
Karl Swarzchild - Thu, 21 Sep 2017 10:46:21 EST sywMqW4i No.57025 Reply
>>57017
>the club should be at night
>what do you think I should do at such a club

well gee, ill tell you what i think
>>
Galileo Galilei - Sat, 23 Sep 2017 21:07:05 EST 7bk1TGPO No.57028 Reply
maybe you could look at stars and talk about them
>>
Tycho Brahe - Fri, 22 Dec 2017 01:13:32 EST mZKzn5Lt No.57133 Reply
>>57017
in my highschool astronomy club we participated a lot in SETI

https://www.celestron.com/products/powerseeker-127eq-telescope

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- Sun, 03 Dec 2017 04:35:05 EST UEOi/cKA No.57111
File: 1512293705978.png -(193419B / 188.89KB, 1920x1080) Thumbnail displayed, click image for full size. https://www.celestron.com/products/powerseeker-127eq-telescope
Im looking for a telescope in the 150-180 range for my cousin
can someone knowledgable help me
https://www.celestron.com/products/powerseeker-127eq-telescope

some of these have more "zoom" I am retarded but are some are cheaper and some have less and are more expensive so I don't get it?
>>
Jericho !.iRAtomic2 - Fri, 15 Dec 2017 12:14:31 EST Wnqom/n1 No.57128 Reply
Go for something with a larger aperture size. This collects more light, allowing lenses with more zoom to be used without everything fading out.
I'd recommend something with a 4"+ aperture. It will come with at least a 40mm eyepiece, and if your cousin wants, they can get other lenses that will zoom more.

You don't understand galactic scales; Relativity is a bitch thread

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- Thu, 04 May 2017 18:10:19 EST unNII3om No.56931
File: 1493935819961.png -(221879B / 216.68KB, 521x311) Thumbnail displayed, click image for full size. You don't understand galactic scales; Relativity is a bitch thread
So imagine you have two cannons firing their cannon balls away from each other, and their muzzle velocity is the speed of light.

You'd think the relative speed of one cannon ball to the other would be 2x the speed of light, right?

Nope. The equation for relative speed between two objects looks like this:

>v1+2=v1+v2/(1+v1v2/c^2)

Where v1 and v2 are the speeds of the two cannon balls and c is the speed of light.

So as the velocity of the cannon balls approaches the speed of light, their own speed doesn't matter and the limit of light speed is dominant. Relative speed of 2x speed of light is thus impossible.

Or in other words: wat.


You guys got some other relativistic mind-blowers?
22 posts and 3 images omitted. Click View Thread to read.
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Jocelyn Bell - Thu, 02 Nov 2017 07:39:24 EST eygzYfFg No.57072 Reply
>>56933
Wromholes don't mess with time because you bend space. Time still flows through the wormhole.
>>
George Hale - Sat, 04 Nov 2017 17:29:49 EST unNII3om No.57075 Reply
>>57072

Um no? It's known as the one most likely way of traveling through time dude. Remember time and space are two sides of the some coin. You bend one you bend the other.

Ayy-lmao! A steroid!

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- Fri, 27 Oct 2017 23:01:24 EST RH1VsRBv No.57067
File: 1509159684326.jpg -(13365B / 13.05KB, 400x227) Thumbnail displayed, click image for full size. Ayy-lmao! A steroid!
https://www.cnet.com/news/interstellar-asteroid-comet-a-2017-u1-pan-starrs-nasa-earth/

>All the asteroids and comets astronomers have ever spotted in our celestial neighborhood appear to come from somewhere else in the solar system and orbit the sun, just like Earth.

That is, until the University of Hawaii's Pan-STARRS 1 telescope last week discovered what appears to be the first ever seen "interstellar object" -- an asteroid (or maybe a comet) that escaped from the gravitational grasp of another star and fell through the roof of our solar system.

That makes the object currently designated A/2017 U1 an alien of sorts around our corner of the cosmos.

The foreign space-something is less than a quarter-mile (400 meters) across, but is moving super fast at 15.8 miles (25.5 kilometers) per second. That's over three times faster than Asteroid 2012 TC4, the rock that gave Earth a close shave earlier this month.

"This is the most extreme orbit I have ever seen," said Davide Farnocchia, at NASA's Center for Near-Earth Object Studies (CNEOS). "It is going extremely fast and on such a trajectory that we can say with confidence that this object is on its way out of the solar system and not coming back."
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Nicolaus Copernicus - Fri, 10 Nov 2017 02:51:08 EST XdfxkLaX No.57085 Reply
Imagine the shit that goes faster than that tho.

Hey Nerds

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- Sun, 23 Jul 2017 18:26:46 EST Fbpr3rrr No.56982
File: 1500848806452.png -(45948B / 44.87KB, 600x224) Thumbnail displayed, click image for full size. Hey Nerds
I was wondering why you guys post here? Aren't these boards ungodly slow? Wouldn't it be easier for you to just go to an actual forum for space discussion? Why wait so long for a reply from some drug addict about stars or whatever when you can probably get better information more quickly from somewhere else?

Not judging, just genuinely curious
13 posts and 2 images omitted. Click View Thread to read.
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Kip Thorne - Thu, 12 Oct 2017 14:09:23 EST KX/DxO6v No.57048 Reply
>>56999

speed exists in relation to predetermined points on a coordinate system
>>
James Elliott - Thu, 12 Oct 2017 16:50:14 EST unNII3om No.57050 Reply
1507841414874.png -(1099690B / 1.05MB, 1013x673) Thumbnail displayed, click image for full size.
>>57048

Space has no inherent coordinate system dude. This is like one of THE realizations of relativism.
>>
Kip Thorne - Thu, 12 Oct 2017 19:57:11 EST KX/DxO6v No.57052 Reply
>>57050

yep, very good. now let's break down relativism: that which is relative [to a given frame of reference]; i.e. you make up your own system as an observer, which will be different from every other observer's system. an object in motion in relation to another object in motion can only have a determinate speed (if we are serious about this conversation we should start using the term velocity, actually) within a predetermined system.

SpaceEngine/Universe Sandbox Thread!

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- Mon, 18 Sep 2017 22:41:08 EST 1NT/Ijtb No.57022
File: 1505788868896.jpg -(294609B / 287.70KB, 1600x900) Thumbnail displayed, click image for full size. SpaceEngine/Universe Sandbox Thread!
Why isn't there one? Post your awesome finds, explosions, super novae, whatever! OP image will be from Universe Sandbox, I'll post another from Space Engine.
>>
Harlow Shapley - Sat, 23 Sep 2017 02:26:00 EST ur3W8pPa No.57027 Reply
1506147960953.jpg -(200566B / 195.87KB, 1920x1080) Thumbnail displayed, click image for full size.
Not sure where this was.

Cassini

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- Wed, 26 Apr 2017 09:23:19 EST rmFM08wB No.56925
File: 1493212999892.jpg -(688640B / 672.50KB, 1920x1080) Thumbnail displayed, click image for full size. Cassini
No Cassini thread? Think we'll find anything we weren't expecting in dem rings?
7 posts and 3 images omitted. Click View Thread to read.
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Paul Goldsmith - Wed, 19 Jul 2017 14:04:24 EST yxm0fECC No.56981 Reply
>>56977
shouldn't a bunch of scientists be able to at least count properly?
>>
John Wheeler - Thu, 14 Sep 2017 23:31:42 EST CZNpyEE2 No.57019 Reply
1505446302260.jpg -(253635B / 247.69KB, 2048x1306) Thumbnail displayed, click image for full size.
Goodnight sweet prince

Other worlds

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- Tue, 08 Nov 2016 04:19:55 EST FFHdMrF/ No.56642
File: 1478596795359.jpg -(177015B / 172.87KB, 1024x1024) Thumbnail displayed, click image for full size. Other worlds
Do you think we will be capable to leave our solar system one day? Or that getting even to the closest star is impossible.
11 posts and 2 images omitted. Click View Thread to read.
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Stephen Hawking - Fri, 25 Aug 2017 23:54:14 EST p1UqQx6T No.57012 Reply
>>56644
The budget is what makes it impossible. As such, humans don't deserve to leave. Money and the idea of it holds us back more than people will ever realize. If man would just stop being selfish and/or trying to control others, we would be so far ahead. Those that want to waste away would be allowed to and those that want to do something great would be able to, because without money, the only thing holding you back would be yourself. In this life, it's both other people and money.
>>
Clyde Tombaugh - Fri, 01 Sep 2017 17:36:46 EST unNII3om No.57014 Reply
>>57012

Only that doing anything of the high-tech sort demands a huge cooperation between people. The guys who build the constituent parts of the rockets, how do they eat without bartering something for their work? How do the scientists eat without bartering something for their work?
>>
Verty - Wed, 13 Sep 2017 01:08:39 EST VRvuffr/ No.57016 Reply
We won't be able to go anywhere important until we figure out how to fold space-time, which some aliens already have as I saw.

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