abby-howard:

ANOTHER ANATOMY POST! Only three vertebrate groups have successfully evolved flight: Birds, Bats, and Pterosaurs, which are NOT dinosaurs, and are an extremely diverse group of reptiles! Pterodactyl is not the only one. However, birds ARE dinosaurs. Avian dinosaurs!

Wings are not some extra structure you tack on to a creature and somehow the arms go away— they ARE arms. Think about that when you are designing creatures with wings and also giving them arms. That means your creature has six limbs.

Next anatomy post: The anatomy and evolution of DRAGONS. If you guys have any requests, feel free to send them in!

plures:

lb-lee:

scienceyoucanlove:

3D printing with stem cells could lead to printable organs

A potentially breakthrough 3D-printing process using human stem cells could be the precursor to printing organs from a patient’s own cells.

Some day in the future, when you need a kidney transplant, you may get a 3D-printed organ created just for you. If scientists are able to achieve that milestone, they may look back fondly at a breakthrough printing process pioneered by researchers at Heriot-Watt University in Scotland in collaboration with Roslin Cellab, a stem cell technology company.

The printer creates 3D spheroids using delicate embryonic cell cultures floating in a “bio ink” medium. They end up looking like little bubbles. Each droplet can contain as few as five stem cells. Basically, this comes down to the printer “ink” being stem cells rather than plastic or another material.

Dr. Will Shu is part of the research team working on the project. “In the longer term, we envisage the technology being further developed to create viable 3D organs for medical implantation from a patient’s own cells, eliminating the need for organ donation, immune suppression, and the problem of transplant rejection,” Shu said in a release from Heriot-Watt.

Perhaps most importantly, the stem cells survived the printing process and remained viable. Shu says this is the first time human embryonic stem cells have been 3D printed. Printing out organs may be far down the line, but it’s just one potential application. The method could also be used to print out human tissue for drug testing.

The research results have just been published in Biofabrication under the title “Development of a valve-based cell printer for the formation of human embryonic stem cell spheroid aggregates.”

While things like 3D-printed Mobius bacon strips and crazy pointy shoes are a lot of fun, it’s applications like this that could really turn 3D printing into a world changer.

source

BAZZELWAKI!

this is BRILLIANT. 😀

~H.

dduane:

circusmaster:

khito:

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

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. 

Wondering how many times I can use the word “fucktuple” today without arousing suspicion. 🙂

Physics says: go to sleep. Of course
you’re tired. Every atom in you
has been dancing the shimmy in silver shoes
nonstop from mitosis to now.
Quit tapping your feet. They’ll dance
inside themselves without you. Go to sleep.

Geology says: it will be all right. Slow inch
by inch America is giving itself
to the ocean. Go to sleep. Let darkness
lap at your sides. Give darkness an inch.
You aren’t alone. All of the continents used to be
one body. You aren’t alone. Go to sleep.

Astronomy says: the sun will rise tomorrow,
Zoology says: on rainbow-fish and lithe gazelle,
Psychology says: but first it has to be night, so
Biology says: the body-clocks are stopped all over town
and
History says: here are the blankets, layer on layer, down and down.

“The Sciences Sing a Lullaby,” Albert Goldbarth  (via commovente)

jakesus:

paln-k:

meeglots:

sugarlocked:

sa-chi:

brainbubblegum:

turntechgoddamnit:

exaltedhaze:

I really like Jupiter’s design.

omg jupiter is a kawaii papa

Uranus is extremely surly from all the butt jokes everyone is making about him

oh jupiter! 

Pluto…..

I’ve reblogged this before, but I like it so much 😀

aw Jupiter!

“This isn’t a phase Jupiter this is who I am”

“Io your surface changes all the time it will be different by next week”

hydrogeneportfolio:

Minimal Posters – Six Women Who Changed Science. And The World.

I really want these as actual posters to hang in my room. Or office. Or both.

You want a physicist to speak at your funeral. You want the physicist to talk to your grieving family about the conservation of energy, so they will understand that your energy has not died. You want the physicist to remind your sobbing mother about the first law of thermodynamics; that no energy gets created in the universe, and none is destroyed. You want your mother to know that all your energy, every vibration, every Btu of heat, every wave of every particle that was her beloved child remains with her in this world. You want the physicist to tell your weeping father that amid energies of the cosmos, you gave as good as you got.

And at one point you’d hope that the physicist would step down from the pulpit and walk to your brokenhearted spouse there in the pew and tell him that all the photons that ever bounced off your face, all the particles whose paths were interrupted by your smile, by the touch of your hair, hundreds of trillions of particles, have raced off like children, their ways forever changed by you. And as your widow rocks in the arms of a loving family, may the physicist let her know that all the photons that bounced from you were gathered in the particle detectors that are her eyes, that those photons created within her constellations of electromagnetically charged neurons whose energy will go on forever.

And the physicist will remind the congregation of how much of all our energy is given off as heat. There may be a few fanning themselves with their programs as he says it. And he will tell them that the warmth that flowed through you in life is still here, still part of all that we are, even as we who mourn continue the heat of our own lives.

And you’ll want the physicist to explain to those who loved you that they need not have faith; indeed, they should not have faith. Let them know that they can measure, that scientists have measured precisely the conservation of energy and found it accurate, verifiable and consistent across space and time. You can hope your family will examine the evidence and satisfy themselves that the science is sound and that they’ll be comforted to know your energy’s still around. According to the law of the conservation of energy, not a bit of you is gone; you’re just less orderly. Amen.

Aaron Freeman “You Want A Physicist To Speak at your Funeral”

(source: npr)

“We who mourn continue the heat of our own lives”. Damn.

(via lonelyheartsdeathmetal)

Oh, just perfect and wonderful and makes me want to cryinagoodway.

(via fridayfelts)

So, so beautiful.

(via dawningmama)

this is one of the best and greatest things I have ever read. 🙂
I don’t want a funeral, but I want a physicist at my memorial anyway.

(via leupstripes)

To be honest, I don’t think I’d want anyone to tell someone else they should not have faith, because if they want to think of all this in terms of spirituality, if that’s what comforts them, gives them strength, or helps them understand, then that’s what they should do. But personally I find (the rest of) this perfect and beautiful.