Photo reblogged from cwl with 313 notes
The largest stars die in explosions more powerful than anyone thought possible—some triggered in part by the production of antimatter
Image: Highest-energy supernovae might look quite spectacular from a planet orbiting the exploding star, but any civilization would most likely be obliterated. Credit: Illustration by Ron Miller
In recent years several supernovae have turned out to be more powerful and long-lasting than any observed before.
Archival images showed that the stars that gave rise to some supernovae were about 100 times as massive as the sun: according to accepted theory, stars this big were not supposed to explode.
Some supernovae may have been thermonuclear explosions triggered by the creation of pairs of particles of matter and antimatter.
The first generation of stars in the universe, which created the materials that later formed planets, may have exploded through a similar mechanism.
Source: ikenbot
Photo reblogged from DiscoveryNews with 921 notes
Paralyzed Rats Regain Mobility in Lab
After severe spinal cord damage, paralyzed rats are able to walk again with the help of a robot to hold them up and stimulate their nerves, a new study shows.
After the rats are trained on the machine for about two months, they gained the ability to control their hind legs — which had previously been cut off from communicating with the brain — with enough dexterity to climb stairs and navigate around objects. This control means that the brain has forged new connections to get around the spinal cord injury.
Source: news.discovery.com
Photo reblogged from Jainki with 146 notes
Neurons vs free will: The notion of free will is under attack again, this time from the advance of neuroscience.
“The more we find out about the workings of the brain, the less room there seems to be in it for any kind of autonomous, rational self. Where, in the chain of events leading up to an action, could such a thing be found? Investigations of the brain show that conscious will is an “illusion”, according to the title of an influential book by a Harvard psychologist, Daniel Wegner, in 2002—a conclusion that has been echoed by many researchers since.”
Source: moreintelligentlife.com
Photo reblogged from Sugar Atoms with 28 notes
This baby, pictured in yellow, is a nucleus. They contain genetic information for every single eukaryotic cell (apart from mitochondrial DNA, and the DNA of chloroplasts). They are the most conspicuous organelle under the microscope, appearing as a darker, denser area. The nuclear envelope separated the nuclear contents from the cytoplasm. The double membrane 9nuclear envelope) is periforated by pores 100nm in diameter. At the lip of each pore, the inner and outer membranes are continous, leaving a space between them of 20-40nm. The inside of the envelope is lined with the nuclear lamina, a netlike array of protein filaments which serve to maintain shape. There is also much evidence for a nuclear matrix within. DNA is present as chromatin or chromosomes in the nucleus, with each species having a characteristic number of chromosomes and genes. A nucleolus is present within the nucleus and is identified as densely stained granules and fibres. The nucleolus synthesises rRBA and studies suggest it also plays a part in is regulation of cellular processes (such as division).
Source: sugaratoms
Photo reblogged from LLBwwb, Just Call me Lynn :) with 1,150 notes
amazing wave splash by aaron feinberg
Source: llbwwb
Photo reblogged from Blogging Is Overrated with 645 notes
Sun’s Embrace
Photograph by Colleen Pinski, My Shot
An observer in Colorado stands framed by a partial solar eclipse in a picture taken last week and submitted to National Geographic’s My Shot.
Solar eclipses happen when the moon lines up between Earth and the sun. But in the most recent case, known as an annular eclipse, the dark moon’s apparent diameter was smaller than the visible disk of the sun, so that it left a ring—or annulus—of fiery light around the edges.
The event was the first annular eclipse seen from the mainland United States since 1994.
Source: National Geographic
Photo reblogged from Uut Poetry with 115 notes
How to Write a Poem
Don’t think too much, don’t express your feelings,
and don’t try to make sense.
Above all, write quickly, asap after
the image is conceived. If you let it go cold
you’ll overthink it and it’ll lose its magic.
For instance I saw a tiny egg shell
on my lawn this morning fallen from a branch.
Then I saw something colorful—fruit I think—
and then I saw some carrot pulp, neon orange
in a bucket by the sink. This excited my senses
and I thought, “there is a poem here somewhere,”
but something had gone wrong and I had to
restart my laptop and during the reboot
the magic disappeared and I was like
“those images are stupid, that’s not a poem”—
overthinking about how somebody someday
might take such a poem seriously and read into
the image of the egg shell and the pulp
and how I might be called on to give an account
of what it means and how it is out there
in the universe, which is stupid of course
because nobody cares that much and even if they did
they wouldn’t actually think it meant anything,
and if they do I can just act annoyed like
they don’t get it and what do they know.Anyway, write your ideas fast, and don’t worry
about logic: logic is the enemy of a poem!
Discursiveness is allowed because that’s what a
poem should imitate—the mind wandering through
its own universe, making sense of things, wanting
to understand, to know, to satisfy the desires
of the flesh and spirit—which is not the same thing
as logic or reasoning.This whole process takes less than 10 minutes.
When you’re done go back—quickly!—and revise,
but only phrases you don’t like and obviously
boring cliches. Don’t edit ideas, just the language.
You want your poem to be a beautiful sexy text
after all. Unless you’re writing a haiku or other
short form, you want the poem to feel fast; there
should be a breathless forward movement of thought
so that the reader is carried along and discouraged
from (over)thinking. This makes the reader feel
like you felt when you wrote the poem, which feels good
because you feel connected to another human being.
If there are any parts that make you slow down
because of syntax or hypotaxis or general profundities
cut it or simplify it. Don’t confuse this with
“wandering”: wandering is allowed and even
encouraged; it’s the brainsurge of coalescing
all thoughts into a grandiose whole
that you want to avoid, because it feels like work
and it confuses people into thinking the poem has
a point. Poems don’t have points they aren’t about
making points they are things that exist in the world
just like you and me, and we have to respect that
and let the poem be its own thing and acknowledge it
respectfully and maybe give it rights.The strange thing about this poem is that it has
almost no images except the ones that I got
self-conscious about, which started this whole thing.
Strange, too, because this poem is not really “my style.”Ok so go write poems have fun and don’t think!
Source: uutpoetry
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