pyrrhiccomedy:


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.
Sources: 1 2 3

pyrrhiccomedy:

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.

Sources: 1 2 3

(Source: wasbella102)

217,620 notes

fuckyeahcrossfit:

to take risks you gotta be like “fuck it” sometimes. 

56 notes

pubhealth:


One map that puts America’s gun violence epidemic in perspective
When it comes to gun ownership, the US blows the rest of the world out of the water. And the research on guns suggests that’s probably contributing to our gun murder problem — one that the 74 school shootings that have happened since Sandy Hook demonstrate isn’t yet under control.
Here’s a map of firearm ownership around the world, using 2012 data compiled by The Guardian. The United States has nearly twice as many guns per 100 people as the next closest, Yemen — 88.8 guns per 100 as opposed to 54.8 in Yemen.
(From VOX)
http://www.vox.com/2014/6/11/5797892/us-world-firearm-ownership-map?utm_medium=social&utm_source=twitter&utm_name=staff&utm_campaign=voxdotcom&utm_content=sunday

pubhealth:

One map that puts America’s gun violence epidemic in perspective

When it comes to gun ownership, the US blows the rest of the world out of the water. And the research on guns suggests that’s probably contributing to our gun murder problem — one that the 74 school shootings that have happened since Sandy Hook demonstrate isn’t yet under control.

Here’s a map of firearm ownership around the world, using 2012 data compiled by The Guardian. The United States has nearly twice as many guns per 100 people as the next closest, Yemen — 88.8 guns per 100 as opposed to 54.8 in Yemen.

(From VOX)

http://www.vox.com/2014/6/11/5797892/us-world-firearm-ownership-map?utm_medium=social&utm_source=twitter&utm_name=staff&utm_campaign=voxdotcom&utm_content=sunday

153 notes

Perhaps we’ll meet again when we’re better for each other.
Ten Word Poem #6 (via alaisiagae)

(Source: poemsbysmm)

230,588 notes

tammytrasho:

Natasha Lyonne’s outfits in Slums of Beverly Hills (1998)

(Source: tashalyonnes)

6,388 notes

mangomamita:

Zanjeer was a Labrador Retriever who served as a detection dog with the Mumbai Police. Due to his impeccable service detecting many explosives and other weapons—in particular during the 1993 Mumbai bombings where he saved thousands of lives—he was given a full state funeral of highest honors.

mangomamita:

Zanjeer was a Labrador Retriever who served as a detection dog with the Mumbai Police. Due to his impeccable service detecting many explosives and other weapons—in particular during the 1993 Mumbai bombings where he saved thousands of lives—he was given a full state funeral of highest honors.

21,792 notes

salesonfilm:

John Belushi & Dan Aykroyd in The Blues Brothers (John Landis, 1980)

202 notes

girl-o-matic:

Vintage Fredrick’s of Hollywood calendar illustrations via (X)

33 notes

Too often people think of exercise in black or white categories: “thirty minutes” or “no minutes.” In reality, any minutes of movement are better than none.
Joel K. Kahn, MD, Integrative Cardiologist (via motiveweight)

4,897 notes