I'm a 22 year old starving artist-type person, who spends a gratuitous amount of time on the internet. I'm also a classically trained musician, and I play the clarinet, piano, and hammered dulcimer. I like books, anime, video games, and (just recently) Homestuck. My deviantART name is Skyeacreon, and all of my art that I post here is under this tag: my art. Feel free to request a drawing in my ask box!
Lights Out: Why does it get dark at night? The answer might be more complicated than you think.
My face while watching this video:
If anyone doesn’t think space is awesome, their life makes me sad.
My brain hurts.
It’s funny that I never questioned this. I must be getting old, I used to ask questions like this when I was younger. SCIENCE!
… Okay i wanna understand this so much, but holy fuck it’s like so confusing… I kinda get it.
SPACE IS STILL AMAZING
SCIENCE BONER OMFG
10 Things You Didn’t Know About Black Holes
Stars whose size is 10 or 15 times as massive as the Sun, generally have a fate of becoming black holes. Small stars, however, die as white dwarfs or neutron stars. So how do large stars become black holes? As stars begin to grow old, they gradually expand and they slowly run out of their supply of hydrogen and then helium. This causes contraction of their cores and expansion of the outer layers. The stars start becoming cooler and less bright and they come to a stage which is known as the red giant phase. Now, for a star which is even 3 times or more the mass of the Sun, undergoes detonation (a violent release of energy caused by a chemical or nuclear reaction) in cataclysms known as supernovae. Such kind of explosion results in scattering of most of a star into the space. However, it also leaves behind a cold remnant of the star, which is no longer able to execute any nuclear fusion reaction.
As there is no fusion in the dead remnants of a massive supernova star, there is no creation of any energy which can oppose the inward pull of gravity caused by the star’s own mass. Thus, the star enters a phase where it begins to collapse in upon itself. This is the formation of the black hole, wherein, it starts shrinking to zero volume. So, with volume being zero, density becomes infinite, so much that even light becomes unable to escape its massively strong gravitational pull. As a result of this, even the light of the dead remnants of the star gets trapped in its orbit and this dark star evolves to become what is known as a black hole.
- It has been estimated that there might be black holes of enormous size, which may be existing at the center of our galaxy, ‘The Milky Way’. These holes are assumed to be having the mass of 10 - 100 billion suns. Now, that is something which is ‘HUGE’, in block letters!
- Cygnus X-1 is the black hole that is located about 8000 light years away from our planet Earth. This is the closest black hole to Earth, known to man.
- Although, black holes are associated with the reputation of having the strongest suction force, they do not bear the capability to absorb the whole universe. Anything such as planets, light and other matter, can be pulled into the grasp of black holes, only if they happen to cross what is known as the event horizon. The radius of this event horizon is known as the Schwarzschild radius and at this radius, the escape velocity equals the speed of the light. So, once an object has passed through it, it must travel faster than light in order to escape it. That is the reason why, even light cannot escape the event horizon of a black hole.
- As mentioned earlier, in this part of black holes in space, only the largest of stars are capable to end up as black holes. Only these stars are massive enough to get compressed to the Schwarzschild radius. While, smaller stars end up as white dwarfs or neutron stars.
- There are several black holes which exist in binary star systems. Stars which are neighboring such holes, will keep on shrinking as their mass will continually be pulled by these holes. Gradually, the black holes will go on increasing, until the other stars have vanished.
- As light cannot escape from a black hole, it cannot be directly observed. However, scientists use the presence of matters which swirl around the hole. Such matters are usually gas and dust and they heat up and emit radiation which can be detected.
- Talking about our Sun becoming a black hole, the phenomenon won’t occur. This is because the sun is not massive enough to shrink into a black hole. However, it will end up to become a white dwarf, after several billion years.
- The center of a black hole is void of time and space.
- A giant elliptical galaxy in the constellation Virgo, is assumed to home the largest known black hole. This hole is about 3 billion times the mass of the Sun.
- Larger black holes are known to suck up other smaller ones which are close to their vicinity.
No matter, how many facts people come up with, black holes represent an endless journey in the vast darkness of the space. The concept which lay hidden in the lap of black holes, perhaps, is the most appropriate analogy to the saying ‘sky is the limit!’
In the image: Simulation of gas cloud approaching the black hole at the center of the Milky Way
Alkali metals are soft metals that can be cut with a knife. The air makes the metal corrode- so sometimes they are kept under oil to stop them from corroding. Their chemical reactions with water can be violent.
fkasjdfaksdhfl MY FAVORITE VIDEO EVER. I KNEW YOU’D COME BACK, ALKALI METALS.
wed always try and get our chemistry teacher to put ceasium into some strong acid but he never did he was such a party pooper!!!!!!!!!
The Mathematics of Beauty
The Fibonacci Sequence is a sequence of numbers where each number is the sum of the previous two—i.e., 0, 1, 1, 2, 3, 5, 8, 13, 21, 34…and so on to infinity. The ratio of one number to the next is approximately 1.61803, which is called “phi”, or the Golden Ratio. It’s not a magical mathematical equation of the universe, but it definitely reflects natural, aesthetically beautiful patterns. The ratio been used as the ideal proportion standard by artists and architects throughout history, and it’s also found in nature because it’s one of the most efficient way to pack things together. The human body can mostly be divided up in terms of the golden ratio, with one nose, two eyes, three segments to each limb, five fingers on each hand, and our measurements and proportions also reflect the ratio, especially the proportions of the human face—the width of the nose, position of the eyes, length of the chin. Our attraction to another person increases if their body and features are symmetrical and proportional, since we perceive them to be healthier, and so the Golden Ratio appears to be connected with humans ideals of beauty. It’s worth noting, however, that although the ratio can create a beautiful face, it can’t create a beautiful mind.
Each morning, like clockwork, they board the subway, off to begin their daily routine amidst the hustle and bustle of the city.
But these aren’t just any daily commuters. These are stray dogs who live in the outskirts of Moscow Russia and commute on the underground trains to and from the city centre in search of food scraps.
Then after a hard day scavenging and begging on the streets, they hop back on the train and return to the suburbs where they spend the night.
Experts studying the dogs, who usually choose the quietest carriages at the front and back of the train, say they even work together to make sure they get off at the right stop – after learning to judge the length of time they need to spend on the train.
Scientists believe this phenomenon began after the Soviet Union collapsed in the 1990s, and Russia’s new capitalists moved industrial complexes from the city centre to the suburbs.
Dr Andrei Poiarkov, of the Moscow Ecology and Evolution Institute, said: “These complexes were used by homeless dogs as shelters, so the dogs had to move together with their houses. Because the best scavenging for food is in the city centre, the dogs had to learn how to travel on the subway – to get to the centre in the morning, then back home in the evening, just like people.”
Dr Poiarkov told how the dogs like to play during their daily commute. He said: “They jump on the train seconds before the doors shut, risking their tails getting jammed. They do it for fun. And sometimes they fall asleep and get off at the wrong stop.”
The dogs have also amazingly learned to use traffic lights to cross the road safely, said Dr Poiarkov. And they use cunning tactics to obtain tasty morsels of shawarma, a kebab-like snack popular in Moscow.
With children the dogs “play cute” by putting their heads on youngsters’ knees and staring pleadingly into their eyes to win sympathy – and scraps.
Dr Poiarkov added: “Dogs are surprisingly good psychologists.”
Saccharin, an artificial sweetener, that has been recrystallized.
Image by Stefan Eberhard, University of Georgia.
Egyptian Aisha Mustafa, 19, has dazzled the physics world with a new invention that could launch spacecraft off the Earth’s surface and soaring through space without any fuel. Space is filled with a billowing sea of quantum particles that jump in and out of existence, and Aisha Mustafa proposes using thin silicon panels, spaced closely together, to trap these particles and then move against them, creating a propelling force. This innovation would make space exploration lighter, safer and cheaper than the traditional “blast off” method. Mustafa still has some design work to do, but unfortunately her research is currently limited by lack of state funding for space science departments at the university level, though her school’s science club did help fund her application for a patent.
What a woman.
WHAT THE FUCK IS MOUNTAIN DEW MADE OUT OF
look I’m not gonna die, fuck that mountain dew
I want to try this. Though, not drinking all the Mountain Dew will be a challenge hahaha
…I knew there was a reason I didn’t drink Mountain Dew.
shoutout to scientists for finding the higgs boson particle without opening up a massive blackhole of death in the middle of switzerland
A cat that has been genetically modified glows green This cats marks an advance in AIDS research, as its cells are able to resist the FIV virus that causes AIDS in cats (Read more)
If you’ve ever wondered WHY DO THEY DO THIS, it’s because the gene that links to the jellyfish gene that enables the glow is also ‘linked’ to the gene they’re trying to get to express fully in the organism. It’s an easy and cost-effective way to achieve this without additional (and potentially harmful to the experiment itself) testing.
I mean first time I saw this I was all “Haha, hey, they’re putting the glowing Jellyfish gene in cats, badass”
Then I READ it
AIDS RESEARCH BREAKTHROUGH ACHIEVED BY CREATING GLOW-IN-THE-DARK CAT
I WANT TO LIVE ON THIS PLANET FOREVER
oh ok wow
this is actually
a good thing
First off; this discovery is AMAZING.
Second; GLOWING GREEN CAT AAHHHHHI NEED IT GUYS I NEED IT
We’re fighting AIDS and creating glowing cats.
I like the direction this world is going in :Y
does that mean in order to prevent contracting HIV, we’d get a shot that makes us glow?