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Space and Astronomy Megathread (MERGED)

Is it real?

  • Yes

  • No, it's a hoax

  • It's something else

  • Yes

  • No, it's a hoax

  • It's something else


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I like how every time God is mentioned in a conversation someone has to make some dumb ****ing comment about magic and fairies and ****. And people say Christians are close-minded and intolerant.:whatever:

What supernatural entity would you consider a tolerant open-minded comparison?

ahura.jpg


2317908-Cthulhu_Rising_by_somniturne.jpg


andumbla.jpg


ancient-cave-paintings-2.jpeg
african-smallpox-idol_796_600x450.jpg

To name a few...
?

Let us know.
 
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What's with the fairy bashing? Have you guys seen some of that classical art?

Look pretty amazing to me.
 
Jupiter Moon Europa May Have Water Geysers Taller Than Everest

http://www.space.com/23923-europa-water-geyers-taller-than-everest.html

Did somebody post the info about the the asteroid colliding with Europa already?

http://www.examiner.com/article/nas...es-on-europa-water-plumes-and-asteroid-impact

NASA announces new discoveries on Europa, water plumes and asteroid impact


I find this very intriguing considering the gravitational influence of Jupiter rips apart the surface of Europa forcing ice on the surface to the the interior. Now it is known that there is more oxygen there than the oceans combined here on Earth. Once they successfully dispute that the water may be too acidic to support life, I wonder if there are sea-monsters dwelling there?
 
New calculations suggest the Universe could collapse at any time



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All things being equal, the universe is set to continually expand, eventually ripping itself to shreds in about 22 billion years. But Danish scientists say an expanding bubble of existential doom could crush the Universe into a tiny ball. And crazily, the odds of this collapse is higher than previously thought.
This theory isn't actually new. But the scientists who conducted the new study say previous calculations were incomplete. Their new, more precise calculations, now show that (1) the universe will probably collapse, and (2) a collapse is even more likely than the old calculations predicted.
To reach this conclusion, researchers from the University of Southern Denmark analyzed three equations that drive the theory, including beta functions (which are used to determine such things as the strength of interactions between light particles and electrons, or Higgs bosons and quarks). But instead of working with one equation at at time, they applied these equations together, revealing a higher probability of a collapse.
Sudden Weight Gain


This particularly collapse theory — which predicts a cataclysmic disruption to standard model vacuum stability — is distinct from the old Big Crunch theory. It suggests that there will eventually be a radical shift in the forces of the universe such that every single particle within it will become extremely heavy. Yes — everything. The particles in the Sun, in your body, and in your smartphone. And we're not just talking a little bit heavier; models predict a weight increase on the order of millions of billions times heavier than they are now.
To say that this would have disastrous consequences would be a gross understatement. Owing to tremendous gravitational forces, everything within the Universe would be squeezed into a tiny, hot, and heavy ball. For all practical purposes, it would be the end of the Universe.
Blame it on the Higgs

This phase transition could happen if a bubble is created where the Higgs-field associated with the Higgs-particle reaches a different value than the rest of the universe.
Should the new value create lower energy, and if the bubble is large enough, it will expand outwards in all directions at the speed of light. Everything caught inside this bubble will experience dramatic weight gain and collect into supermassive centers. In turn, these centers will attract each other, and on and on until we get our tiny, hot, and heavy ball of utter uselessness.
It Could Already Be Happening

And here's what's even more crazy: This could be happening as we speak.
"The phase transition will start somewhere in the universe and spread from there," says Jens Frederik Colding Krog, PhD student at the Center for Cosmology and Particle Physics Phenomenology (CP3) and co-author of an article on the subject that appears in the Journal of High Energy Physics. "Maybe the collapse has already started somewhere in the universe and right now it is eating its way into the rest of the universe. Maybe a collapse is starting right now, right here. Or maybe it will start far away from here in a billion years. We do not know." The comments were made in a recent statement.
Wanted: New Kinds of Particles

Krog says that the whole thing could be canceled if there are other elementary particles out there that we don't know about. Fascinatingly, some cosmologists at CP3 believe that the Higgs particle is not an elementary particle, but rather an amalgam of even smaller particles called techni-quarks. What's more, supersymmetry theory predicts the existence of yet undiscovered particles — like selectrons for electrons, fotinos for photons, and so on. Should this be the case, then the entire collapse model....uh...collapses.



Oh, and for the record, this isn't the first time the Higgs particle has been implicated in universal doom.
Read the entire study at the preprint journal arXiv: "Standard Model Vacuum Stability and Weyl Consistency Conditions".
Crazy stuff
 
Kind of funny they didn't mention the giant purple space amoeba coming to get us.
 
This planet does make me wonder (since it may have a potentially habitable sister), how many life-sustaining planets can a single star support? Sustaining Earth-like life, I mean.

Obviously the size of the star dictates the size of the habitability zone, but there must be a limit.
 
Why would there be a limit if they're in a habitable zone? When our star expand to the orbit of Mars, there will be five moon that could suddenly become habitable, because at that time in our star's life, the habitable zone would extend out to Jupiter & Saturn and their watery moons.
 
Well, the habitability zone is only a limited size.

Also, it takes more than being in the habitable zone for a planet to be habitable. They have to be in it for a certain amount of time, they also need a strong magnetic field, etc.

Life developing on moons also involves a lot more than simply being in the zone.

Though I am actually curious how big a zone can be, and how many planets can be in it.
 
Our First Glimpse of the Web that Connects All Galaxies

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Astronomers say all of the galaxies in the universe are connected by a vast cosmic web of filaments, but we've never actually seen this supposed network. That's changed, however, thanks to the tumultuous activity of a distant quasar that's illuminating the celestial backdrop.

We already know about these filaments, at least conceptually, because computer simulations tell us they're there. As the universe cooled after the Big Bang, most of its matter (including and especially dark matter) congealed into a network of filaments that spanned the cosmos. Certain points of this web contained more mass than others, eventually resulting in the formation of stars, galaxies, and galactic clusters. So even though the Big Bang happened long ago and its galaxies are now far apart, virtually everything's still connected within this web of vestigial matter.

But these filaments, which exist as rarefied and highly ionized gas, are invisible and have never been seen by astronomers. We've been able to visualize intergalactic gas by detecting its absorption of light from bright background sources, but that hasn't really shown us how this gas is distributed.

Using the Keck Telescope in Hawaii, astronomers recently detected a very large and bright nebula of gas stretching about two million light-years across intergalactic space. The nebula was lit-up like a Christmas tree thanks to a nearby quasar — a type of active galactic nucleus that shoots intense radiation powered by a supermassive black hole at the center of the galaxy.

"This is a very exceptional object: it's huge, at least twice as large as any nebula detected before, and it extends well beyond the galactic environment of the quasar," noted researcher Sebastiano Cantalupo in a statement.

The astronomers then took full of advantage of this discovery. They used it to detect the fluorescent glow of hydrogen gas caused by the intense radiation from the quasar.

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"This quasar is illuminating diffuse gas on scales well beyond any we've seen before, giving us the first picture of extended gas between galaxies," said astronomer J. Xavier Prochaska. "It provides a terrific insight into the overall structure of our universe."

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It's the first time anyone has captured an image of the cosmic web, clearly showing its filamentary structure.

The quasar, UM 287, is about 10 billion light-years away. The filament it's illuminating is two million light-years across, meaning that it must extend from the quasar's host galaxy into intergalactic space.

But while the discovery confirms current conceptions of how the universe formed and evolved, it also shows some gaps in our knowledge. The filament is far more massive than simulations predicted — containing gas that weighs the equivalent of a thousand billion suns.

"We think there may be more gas contained in small dense clumps within the cosmic web than is seen in our models," said Cantalupo. "These observations are challenging our understanding of intergalactic gas and giving us a new laboratory to test and refine our models."

http://arxiv-web3.library.cornell.edu/abs/1401.4469

Amazing discoveries are made everyday, it's a great time to be alive and love science!
 
What if that web is just a neurological connection for a higher being! It looks exactly like when you look at the electrical connections in the brain.

Imagine if we were just thoughts of some galactic being.
 
What if that web is just a neurological connection for a higher being! It looks exactly like when you look at the electrical connections in the brain.

Imagine if we were just thoughts of some galactic being.

:barf:

Please, don't confuse/scare me more than what I already am.
 
So I read yesterday that scientists believe that we might be entering a new ice age soon, thanks to the sun powering down. Has anyone read or heard anything about this from any legit source?
 
What if that web is just a neurological connection for a higher being! It looks exactly like when you look at the electrical connections in the brain.

Imagine if we were just thoughts of some galactic being.
That reminds me of the scene from Iron Man 3 with Killian and Pepper.
 
A white dwarf just exploded, creating the closest supernova in 25 years

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A white dwarf exploded last night up in the Cigar Galaxy (also known as M82 to its friends), creating the closest supernova we've seen in the last 25 years — and one of the brightest, too.

Images of the supernova are still coming in, and the final call from the International Astronomical Union's Central Bureau for Astronomical Telegrams (the ruling body on supernova classification) hasn't yet been finalized. But the very first images may have come from the University of London's teaching observatory, where students and teachers, led by supernova discoverer Steve Fossey, caught this set of before and after images. The top image was taken on December 10th; then they reshot the area on January 21st, this time picking up the rapidly brightening supernova (which you can see marked on the image.)

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Of course, the closeness of the supernova is relative — neighboring galaxy M82 is still about 12-million light years away from us. But at that distance and brightness, the over-skies drama unfolding is easily within range of scientific observatories, and might even be able to be caught on a backyard telescope.

The as yet unnamed supernova, which scientists are temporarily referring to by the not terribly catchy PSN_J09554214+6940260, has been classified as a Type Ia supernova, a supernova formed by either the collision or, in this case, explosion of a star. They're also commonly used by astronomers to measure distances across the universe.

More details about the supernova are yet to come as scientists continue to observe the supernova in action, in the meantime, check out this animation of the supernova as it appears from out of the darkness, made by Remanzacco Observatory:

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http://www.astronomerstelegram.org/?read=5786

Pretty cool stuff
 
Usually when I read articles about the Universe its like "in the past billion years blah blah blah" and this one was within 25 years...thats pretty astonishing.
 
That reminds me of the scene from Iron Man 3 with Killian and Pepper.

:barf:

Please, don't confuse/scare me more than what I already am.

Tell me it doesn't though. I think I'm onto something huge here. What if our existence is merely thoughts inside a slumbering Galactic life form. The big bang, the creation of all things was that being closing their eyes and entering a dream state.

Or maybe the big bang was that galactic being coming to life or being "born". It's common knowledge we have bits of the universe inside of us, we are all apart of it. What if its because we're just a dream.

Mind = blown.
 
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