Idk if this counts as a peeve more of an art-astronomy pet peeve
but when people draw the cresent moon and where the dark, shaddowed part of the moon is they put in stars
like studdenly that part of the moon is invisible instead of just being in the shadow
wait no peOPLE ACTUALLY DO THIS???
really stupid question though but like, aren’t there stars in front of the moon??? like??? space isn’t two dimensional so someone putting a couple stars in front of the shadow wouldn’t necessarily be wrong?? because aren’t there stars all around in space and?????? im just going to be confused forever frick uvu;
hun if there was a star infront of the moon we’d be fucking dead
i’m fucking crying
'Hyperclusters' of the Universe — “Something is Behaving Very Strangely”
The large-scale structure of the Universe appears to be dominated by vast “hyperclusters” of galaxies, according to the Sloan Digital Sky Survey, compiled with a telescope at Apache Point, New Mexico. The 2011 survey plots the 2D positions of galaxies across a quarter of the sky. The science team concluded that it could mean that gravity or dark energy – or something completely unknown – is behaving very strangely.
We know that the universe was smooth just after its birth. Measurements of the cosmic microwave background radiation (CMB), the light emitted 370,000 light years after the big bang, reveal only very slight variations in density from place to place. Gravity then took hold and amplified these variations into today’s galaxies and galaxy clusters, which in turn are arranged into big strings and knots called superclusters, with relatively empty voids in between.
Originally, the word “nebula” referred to almost any extended astronomical object (other than planets and comets). The etymological root of “nebula” means “cloud”. As is usual in astronomy, the old terminology survives in modern usage in sometimes confusing ways. We sometimes use the word “nebula” to refer to galaxies, various types of star clusters and various kinds of interstellar dust/gas clouds. More strictly speaking, the word “nebula” should be reserved for gas and dust clouds and not for groups of stars.
By order in which they appear from top to bottom, left to right, here are the main types and some provided examples for visual reference:
Planetary Nebulae: Sh2-188
Planetary nebulae are shells of gas thrown out by some stars near the end of their lives. Our Sun will probably evolve a planetary nebula in about 5 billion years. They have nothing at all to do with planets; the terminology was invented because they often look a little like planets in small telescopes. A typical planetary nebula is less than one light-year across.
read more about the others
Astronomers have discovered the largest known structure in the universe, a clump of active galactic cores that stretch 4 billion light-years from end to end. The structure is a light quasar group (LQG), a collection of extremely luminous Galactic Nulcei powered by supermassive central black holes.
So that’s cool and everything, but maybe some of you would be interested to know why this is a significant find? Beyond just its record-setting bigness.
Since Einstein, physicists have accepted something called the Cosmological Principle, which states that the universe looks the same everywhere if you view it on a large enough scale. You might find some weird shit over here, and some other freaky shit over there, but if you pull back the camera far enough, you’ll find that same weird and/or freaky shit cropping up over and over again in a fairly regular distribution. This is because the universe is (probably) infinite in size and (we are pretty darn sure) has, and has always had, the same forces acting on it everywhere.
So why is this new LQG so radical? (It stands for ‘Large Quasar Group,’ btw, not ‘Light Quasar Group.’)
Well, let’s try to comprehend the scale we’re dealing with. A ‘megaparsec,’ written Mpc, is about 3.2 million light years long. The Milky Way is about 0.03 Mpc across (or 100,000 light years). The distance between our galaxy and Andromeda, our closest galactic neighbor, is 0.75 Mpc, or 2.5 million light years. LQGs are usually about 200 Mpc across. Assuming a logarithmic distribution of weird shit outliers (if you don’t know how logarithmic distribution curves work, don’t worry about it), cosmologists predicted that nothing in the universe should be more than 370 Mpc across.
This new LQG is 1200 Mpc long. That’s four billion light years. Four BILLION LIGHT YEARS. Just to travel from one side to the other of this one thing. I mean for fuck’s sake, the universe is only about 14 billion years old! How many of these things could there be?
Right now it looks like the Cosmological Principle might be out the window, unless physicists can find some way to make the existence of this new LQG work with the math (and boy, are they trying). And that’s totally baffling. It would mean—well, we don’t have any idea what it would mean. That the universe isn’t essentially uniform? That some ‘special’ physics apply/applied in some places but not in others? That Something Happened that is totally outside our current ability to understand or quantify stuff happening?
By the way, no one lives there. The radiation from so many quasars would sterilize rock.
are you telling us astronomers have discovered something which is literally fucktuple the size of anything else previously estimated to exist
Anything that fucking rewrites all of what we know about the universe needs to get its ass on my blog. It’s giant, glowy, black hole filled ass.
So basically physicists, scientists and NASA (and outerspace buffs) are kinda having a massive orgasm and freaking the fuck out right now.
Steven and I really hope you enjoy!
poor, poor pluto
still a planet in our hearts
This isn’t even a WANT this is a NEED
Oh yes this is a need. I fucking bought 2 of them straight up.
|—||Neil de Grasse Tyson (via christomsun)|
PEOPLE WHO ARE NOT EXCITED ABOUT SPACE BAFFLE ME LIKE THEY JUST FOUND A PLANET WHERE IT RAINS GLASS AND IT RAINS SIDEWAYS ITS LIKE YOOOOOOOOOOOOOOO HOW CAN U NOT CARE IF U CANT BE EXCITED ABOUT SPACE GET OUT MY FACE
THERE IS A SUPER MASSIVE CLOUD OF DRINKABLE ALCOHOL FLOATING AROUND IN SPACE AND FROM WHAT WE CAN TELL SO FAR IT’S RASPBERRY FLAVORED OKAY
An important reminder that the universe has three spatial dimensions and is best appreciated with all three engaged*.
*engage fourth as needed for EXTREME MODE
god dammit people tag your porn
FUCK THIS IS SEXY
*Freaks out, is kind of a nerd for this stuff*
according to this wikipedia article, not only is this comet real, it’s going to be visible (bright at that) in our skies from early november to fucking january.
mark your calendars, guys.
Mark your calenders? Christ. Come November I don’t think you can forget. Just look up.