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Space is really cool let's post our favorite videos or facts about it!
- Thread starter Cantaim
- Start date
http://joshworth.com/dev/pixelspace/pixelspace_solarsystem.html
Really cool website to see how big and empty just our solar system is, never mind the galaxy or the universe. Bonus points if you use the light speed (aka max speed) button. It really removes all hope of going to other earth-like planets.
Really cool website to see how big and empty just our solar system is, never mind the galaxy or the universe. Bonus points if you use the light speed (aka max speed) button. It really removes all hope of going to other earth-like planets.
Sorry, I dunno why I said galaxies earlier. I meant "universe".
Anyway, surely something exists outside of our universe. Before the big bang what was there? It couldn't be nothing.
Normally, magnetic fields aren't really dangerous or even relevant to biological life. The carbon based complexes and various hormones and even the iron in your hemoglobin is arranged in a manner that is weakly paramagnetic at most.
But then there are magnetars. This is a type of neutron star that emits a magnetic field of up to 10^11 teslas. This is so strong that it literally *causes chemistry to stop working* within about 1000km because the electron clouds in atoms become too distorted to maintain the integrity of complex molecular structures.
Light splits and merges, the vacuum itself gets polarized like a calcite crystal. Atoms are deformed into long cylinders thinner than the de Broglie wavelength of an electron. That shit is straight up awesome.
But then there are magnetars. This is a type of neutron star that emits a magnetic field of up to 10^11 teslas. This is so strong that it literally *causes chemistry to stop working* within about 1000km because the electron clouds in atoms become too distorted to maintain the integrity of complex molecular structures.
Light splits and merges, the vacuum itself gets polarized like a calcite crystal. Atoms are deformed into long cylinders thinner than the de Broglie wavelength of an electron. That shit is straight up awesome.
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- Dark matter and dark energy: Now this is always tricky. We have until now found that the known universe is just 4-6% and the rest is dark matter and dark energy but this year we have first found a galaxy with no dark matter and a good chunk of the missing baryons have been found. WHIM does exist but we still don't know a large chunk of the universe regardless and dark matter and dark energy still does exist.
- Saturn just sounds eerie more on that here.
- Currently the largest structure known in the universe is a supervoid that's pretty much devoid of any galaxies or galaxy clusters
- The pillars of creation
were pretty much destroyed 6000 years ago by a supernova explosion but we'll probably only see how it actually looks in a 1000 years from now
- The 'Oumuamua is the first known interstellar object to visit the sol system. It was discovered late last year but is traveling too fast for us to send probes onto it. This asteroid is giving us new insight into planetary formation. Models currently say it came from a system of two suns. It has definitely broken the sun's gravitational pull and is unlikely to return once it leaves the Sol System.
The fact that always stuck with me in regards to how big space actually is was that if you were to put every other planet in our solar system next to each other they could all fit in between earth and our moon.
The sad one I also remember was, iirc, because of the way space works with expansion we can't ever actually reach different sections of space so they are effectively separate areas of space that we can never explore.
The sad one I also remember was, iirc, because of the way space works with expansion we can't ever actually reach different sections of space so they are effectively separate areas of space that we can never explore.
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We share this universe with other civilizations and creatures. We just don't know where to look. When I look up at the night sky I like to think that I am looking in the direction of a civilization that may also be looking up and back at me.
Space is really big. There is lots of life out there. We just have not found it yet.
Space is really big. There is lots of life out there. We just have not found it yet.
We will find a way. If we somehow manage to survive not blowing ourselves up and come together pooling our resources to work towards a common goal, we can achieve great things. I believe this is what it would take for us to begin the crucial first steps of becoming an interstellar species.
Nothing is impossible. There are ways around breaking the fundamental laws that govern the universe to enable faster than light travel. We have just not discovered that yet but with enough time and perseverance we will do it.
there is 50 billion planets in our galaxy
the distance to the moon is 238,855 miles
each planet would have to be, on average, 0.0000047771 miles in diameter for that to be true.
If we ever detect aliens in space, we would be observing past versions of them rather than their present selves.
Sorry I meant our surround planets - Mercury, Mars, venus, jupiter, saturn uranus, neptune.
Crazy to think about considering.
Not the FAR past though. If I look at you two meters from me it's essentially the present you...
Solar system that will be then.
Not really.
It takes time for the light to bounce back to our eyes.or something.
everything is in the past.
Hence "FAR" and "essentially". You from like 0,00000000000000000000000000000001349349 seconds in the past is essentially the present you as far as I'm concerned...
Move aside, Death Star or Starkiller Base. The most destructive cosmic sniper ever would be gamma ray bursts, most likely as a result of supermassive stars collapsing into black holes. It's all well and fine if these bursts originate from sources many hundreds of thousands of light years away, but if we're unfortunate enough to be within range of one a few thousand light years away, everything in our Solar System would effectively be sterilised. This kind of shows more than anything how inhospitable the universe actually is for life and how lucky we are to still be here.
The sun in the sky that we see is always 8 minutes 20 seconds in the past.
We will never see the current Sun in our life time.
This picture is both present day and 2.5 Million years old.
We will never see the current Sun in our life time.
This picture is both present day and 2.5 Million years old.
If you can locate it one called The Farthest is really good. It's more about the Voyager mission.
I think it's on Amazon prime in the US.
OP
OP
Jupiter's Big Red spot has been raging on since 1831 at the minimum. The storm is 12,400 miles long and 7500 miles wide (in kilometers it's 20,000 and 12,000) the winds can reach up too 425 miles an hour (in km it's 680).
That thing is strong
That thing is strong
This is the most incredible picture of space I've ever seen.
Realizing that you're looking at one quadrant of one of potentially trillions of galaxies in the known universe, and seeing it pan towards the center which is a literal sea of stars so bright they become unresolved from one another actually gets me choked up.
We'll never come close to fully comprehending the universe.
Cool concept but why would it want to? What would be the point?
To make sure everything is according to plan? But, we cannot understand 99% of the things we see. Shouldn't we be born with an understanding already?
So many questions.
Lol came to post this. I stare at this for like 10 mins everytime I see it. WTF
One of the things I found interesting about Policenauts is how even in an advanced future, it focuses on how space just seems to naturally be constantly trying to repel/kill humanity even with all the advances they've made.
Gotta take fucking pills, gotta get organ transplants, birth defects, etc.
Most scifi just frames it as "well, once you put up some walls and get some oxygen, that shit works itself out" .
Gotta take fucking pills, gotta get organ transplants, birth defects, etc.
Most scifi just frames it as "well, once you put up some walls and get some oxygen, that shit works itself out" .
It breaks my brain trying to figure out how big that shit really is. Like I can't figure it out.
Hey, does a phycisist here have context or an answer for the following question:
Let's imagine for a second that the filament structures of galaxies and maybe even the CMB - are at the top of our visible universe, and quarks and gluons (and smaller) are at the bottom - and we're sort of in the middle - is there any reason at all to believe that we're seeing an even remotely full view of the universe? That is to say, is it possible that the spectrum of scale I just defined, could be an arbitrary inch in the middle of a 30 inch ruler? And that it's vastly bigger and smaller at the other ends.
Let's imagine for a second that the filament structures of galaxies and maybe even the CMB - are at the top of our visible universe, and quarks and gluons (and smaller) are at the bottom - and we're sort of in the middle - is there any reason at all to believe that we're seeing an even remotely full view of the universe? That is to say, is it possible that the spectrum of scale I just defined, could be an arbitrary inch in the middle of a 30 inch ruler? And that it's vastly bigger and smaller at the other ends.
This is a cool animation/app where you can scroll and compare sizes going from atoms to the biggest things in the universe.
http://htwins.net/scale2/