Leave these fields empty (spam trap):
Name
You can leave this blank to post anonymously, or you can create a Tripcode by using the format Name#Password
Subject
Comment
[i]Italic Text[/i]
[b]Bold Text[/b]
[spoiler]Spoiler Text[/spoiler]
>Highlight/Quote Text
[pre]Preformatted & Monospace Text[/pre]
[super]Superset Text[/super]
[sub]Subset Text[/sub]
1. Numbered lists become ordered lists
* Bulleted lists become unordered lists
File

Sandwich


Discord Now Fully Linked With 420chan IRC

Lakes of liquid water found on Mars

View Thread Reply
- Thu, 26 Jul 2018 15:44:03 EST CZNpyEE2 No.57358
File: 1532634243590.jpg -(3262171B / 3.11MB, 5333x3333) Thumbnail displayed, click image for full size. Lakes of liquid water found on Mars
Ground-penetrating radar images of the southern polar cap of Mars taken by ESA's Mars Express suggest the presence of liquid water 1.5 km beneath the surface. As pure liquid water probably cannot exist at such a shallow depth and low temperature, the research team posits that the water is a brine with salts and perchlorates that dramatically lower its freezing point. The largest discovered aquifer is 20 km wide, but its thickness cannot be accurately estimated. The water reservoirs would take the form of salty brine pools beneath the mile of layered ice and dust, or the water might be a component of thicker brine-dirt sludge, mixed with Martian regolith.

http://www.sciencemag.org/news/2018/07/liquid-water-spied-deep-below-polar-ice-cap-mars
http://science.sciencemag.org/content/early/2018/07/24/science.aar7268

Astronomical data

View Thread Reply
- Fri, 29 Jun 2018 13:36:57 EST BPHCgbLm No.57327
File: 1530293817601.jpg -(138469B / 135.22KB, 1200x1200) Thumbnail displayed, click image for full size. Astronomical data
I had an idea to build a digital astronomical clock for fun in unity as a learning exercise. It would include solar system clock showing the "time" and such on various planets and a 3rd model of the solar system.
I'd like to try aim for a bit of realism and have the models of planets be in accurate locations to real life.
What would be the best source for finding out planet locations so that they don't all start in the 12 oclock position when I start my program?
Like if I added Mars, how do I find how far into its solar year (month?) It currently is on Mars?

I'm new to coding in general, I already have the data for earth but that's done simply by telling the program to check the system clock and moves the model of earth to right orientation.
6 posts omitted. Click View Thread to read.
>>
James Randi - Fri, 06 Jul 2018 20:46:11 EST CxvjOUYt No.57340 Reply
any links to some sort of table would be helpful too

images

View Thread Reply
- Fri, 29 Jun 2018 11:49:29 EST vxFcQ9yD No.57323
File: 1530287369168.jpg -(3086272B / 2.94MB, 7680x4320) Thumbnail displayed, click image for full size. images
Since this is an imageboard, let's post space related images.
1 posts and 1 images omitted. Click View Thread to read.
>>
Vera Rubiin - Sat, 07 Jul 2018 18:30:41 EST fjAVn7KX No.57341 Reply
1531002641478.gif -(2398469B / 2.29MB, 640x480) Thumbnail displayed, click image for full size.
DICKS EVERYWHERE

Astronomical Illusion - Earth is the center of the universe

View Thread Reply
- Tue, 19 Jun 2018 17:15:11 EST 6aIwEr35 No.57311
File: 1529442911009.jpg -(342372B / 334.35KB, 1920x1080) Thumbnail displayed, click image for full size. Astronomical Illusion - Earth is the center of the universe
Hello!

This is from a video series I saw long ago and it described a general illusion that is responsible for the Earth being seen as the center of the universe.

Like they say that in a few million/billion years the sky is going to be completely dark because the stars are moving away from us. But this is just an illusion from our vantage point. We're also moving away from them but we can't see it, only visualize it.


The way I remembered in the video was very clever and simple.

It was like rows and columns of 4 dots:

. . . .
. . . .
. . . .
. . . .

And it had like a clear paper with one dot in the middle. And as the transparent paper moved, the dot moved relative to the stationary background and you could see how the center of the dot in the transparent paper stayed stationary as the rest moved away.

I'm probably not explaining it right because even that doesn't make sense to me but maybe it's enough to go on for one of you out there
1 posts omitted. Click View Thread to read.
>>
Thomas Henderson - Wed, 20 Jun 2018 10:08:09 EST 6aIwEr35 No.57313 Reply
>>57312

Thanks for the explanation but the illusion I was referring to was the fact that astronomers before would always postulate that Earth was the center of everything (that is, stationary) and everything else is moving away or moving around us.

But in reality, Earth is moving as well and isn't actually stationary.

The illusion is that Earth is just used as a stationary anchor point for our perspective because we need a relatively stable point to base our calculations on. Like the same way we arbitrarily chose the weigh of a kilogram and now use that to conceptualize weight relative to one another.

But because of modern technology, we can visualize the universe more conceptually without putting Earth at the center.
>>
Henry Draper - Wed, 20 Jun 2018 22:42:36 EST 457vC2+I No.57314 Reply
1529548956888.jpg -(111795B / 109.17KB, 1280x720) Thumbnail displayed, click image for full size.
>>57313
Astronomers certainly are aware of the motion of our solar system and account for it in their calculations when it is relevant, including calculations of expansion and redshift. I agree I wish popularly available star charts included depictions of the direction of motion and speed of stars so people can visualize what is going on better, but if, as a matter of principle, we stop using earth as the reference point, over time they will become off center with the physical hubble volume, the universe-lifetime light sphere of earth, which is obviously centered here. Once we are an interplanetary species, we will obviously need new definitions, and for most practical purposes the difference won't matter much.

How would you feel about using the center of the galaxy (either its gravitational center or the supermassive blackhole Sag A*) as our reference center point? That wouldn't differ too much from our visible observations, and seems the most convenient.
>>
Annie Cannon - Wed, 27 Jun 2018 15:30:26 EST 6aIwEr35 No.57319 Reply
>>57314

I'm not against using Earth or whatever as a reference.

I was just intrigued by the natural phenomena that we see ourselves as the center of things when it's a fallacy of perception. And I remember the same phenomena existed in astronomy until the copernican revolution

Hey

Locked View Thread Reply
- Fri, 25 May 2018 04:39:48 EST eiFhhu/4 No.57283
File: 1527237588460.jpg -(368926B / 360.28KB, 720x1280) Thumbnail displayed, click image for full size. Hey
Check this mother ****** out.
>>
Kiyotsugu Hirayama - Sat, 26 May 2018 13:15:33 EST 10X7g+Qi No.57284 Reply
1527354933221.jpg -(2595730B / 2.48MB, 2448x3264) Thumbnail displayed, click image for full size.
Whoay thread. I'm going to be working all day and maybe into the night. Hope i produce something increadible!

Stephen Hawking died at age 76

View Thread Reply
- Wed, 14 Mar 2018 03:52:46 EST UgaLEhyB No.57237
File: 1521013966541.jpg -(203302B / 198.54KB, 1160x629) Thumbnail displayed, click image for full size. Stephen Hawking died at age 76
Goodnight you genius retard
>>
William Hartmann - Wed, 14 Mar 2018 09:04:12 EST eygzYfFg No.57238 Reply
His absurd in-mental astrophysics simulations will be missed. Rest in peace dude, you deserve it.
>>
Thomas Henderson - Wed, 14 Mar 2018 11:22:05 EST sL8p9E02 No.57239 Reply
RIP to the coolest dude.
>>
William Fowler - Fri, 13 Apr 2018 19:43:23 EST Iarb3bdT No.57277 Reply
You were a remote-controlled animatronic silicone muppet for decades, but a pretty good mascot and an excellent rapper.

Fucking ECLIPSE thread!

View Thread Reply
- 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

View Thread Reply
- 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.
>>
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

View Thread Reply
- 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.

View Thread Reply
- 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.
>>
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

View Thread Reply
- 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

View Thread Reply
- 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.
>>
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

View Thread Reply
- 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

View Thread Reply
- 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.

Report Post
Reason
Note
Please be descriptive with report notes,
this helps staff resolve issues quicker.