26 outubro 2014

Too Close to a Black Hole

What would you see if you went right up to a black hole? Featured is a computer generated image highlighting how strange things would look. The black hole has such strong gravity that light is noticeably bent towards it - causing some very unusual visual distortions. Every star in the normal frame has at least two bright images - one on each side of the black hole. Near the black hole, you can see the whole sky - light from every direction is bent around and comes back to you. The original background map was taken from the 2MASS infrared sky survey, with stars from the Henry Draper catalog superposed. Black holes are thought to be the densest state of matter, and there is indirect evidence for their presence in stellar binary systems and the centers of globular clusters, galaxies, and quasars.

from NASA http://ift.tt/1t4wS8Q

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Como desfazer uma amarração amorosa?

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womeninspace: All Female Mars crew might be our best option....


All Female Mars crew might be our best option.

Researcher have studied the fitness for space travel of both men and women and find remarkable differences in what is needed to support male and female crew members. Kate Greene experienced it first hand as researcher and crew member at HI-SEAS crew 1. Kate found that her three male crew members ate significantly more, than her female colleagues, a result which verifies other studies in this field.

The Hawai’i Space Exploration Analog and Simulation (HI-SEAS) Facility is located on the side of a volcano in Hawaii. A crew of six (3 women and 3 men) reside in a two story dome for the duration of a mission. The first two missions took both 4 months, but the current mission will continue for eight months.

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shadowinkwarrior: movie: This is a list of movies missing on...

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buzzfeedpolitics: Chicago man tells Obama: “Don’t touch my...


Chicago man tells Obama: “Don’t touch my girlfriend.”

Not only did this actually happen, but President Obama also referred to the man whose girlfriend he kissed as “a fool”

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seashell: Saturn and rings, photographed by Cassini, July...

seashell: Saturn and rings, photographed by Cassini, July 2009.

13 frames, each a composite of a red, a green, and a blue-filtered photograph.

Image credit: NASA/JPL/SSI. Animation: AgeOfDestruction.

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October 26th 1881: Gunfight at the O.K. Corral On this day in...

Tombstone, Arizona, in 1881

Newspaper article about the Gunfight at the O.K. Corral

October 26th 1881: Gunfight at the O.K. Corral

On this day in 1881 the famous ‘Gunfight at the O.K. Corral’ took place in Tombstone, Arizona at around 3pm. The fight was between the outlaw cowboys Billy Claiborne, Ike & Billy Clanton and Frank & Tom McLaury and lawmen Virgil, Morgan & Wyatt Earp and Doc Holliday. Billy Clanton and the McLaurys were killed in the fight, but the other outlaws escaped. The event has become symbolic of the Wild West and was the feature of a 1957 film starring Burt Lancaster and Kirk Douglas.

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October 25th 1760: George III becomes KingOn this day in 1760,...

George III of the United Kingdom (1738 - 1820)

John Trumbull's famous painting of the preparation of the US Declaration of Independence

Battle of Waterloo which saw Britain defeat Napoleon

October 25th 1760: George III becomes King

On this day in 1760, George III became King of Great Britain upon the death of his grandfather George II. George III’s reign saw the union of Britain and Ireland in 1801 and several military conflicts. These conflicts included the Seven Years’ War (where Britain defeated France), the American War of Independence (which saw Britain lose its colonies in North America) and the Napoleonic Wars against revolutionary France. George III suffered from mental illness towards the end of his life, which led to a regency being established with his son George, Prince of Wales as Prince Regent. Upon George III’s death in 1820, his son succeeded him and became George IV.

"Born and educated in this country, I glory in the name of Britain"

- George III in his accession speech to Parliament

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The history behind the iconic photo — On March 5, 1960,...

The history behind the iconic photo — On March 5, 1960, Cuban fashion photographer turned photojournalist Alberto Korda took this image of the 31-year-old Marxist revolutionary at a memorial service in Havana for victims of a munitions ship, La Coubre, which had exploded in the city’s harbor the previous day. Fidel Castro quickly blamed the U.S. for the blast, which killed at least 75 people and injured several hundred others, although the exact cause never was determined. After the La Coubre memorial service, the newspaper Korda worked for, “Revolucion,” ran pictures of Castro and other dignitaries but rejected the photo of Guevara. The picture appeared in various publications in Cuba and Europe in the ensuing years but drew little notice. In 1967, Giangiacomo Feltrinelli, a left-wing Italian publisher who was interested in Guevara, learned about the photo while on a visit to Cuba and was given a free copy by Korda. After the Argentine-born Guevara was captured and killed by soldiers in Bolivia later that same year, Feltrinelli distributed posters using Korda’s photo, dubbed “Guerrillero Heroico” (Heroic Guerilla), and the image soon spread around the world, becoming a symbol of revolution and youthful rebellion.

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Reminiscing can help boost mental performance To solve a mental...

Reminiscing can help boost mental performance

To solve a mental puzzle, the brain’s executive control network for externally focused, goal-oriented thinking must activate, while the network for internally directed thinking like daydreaming must be turned down to avoid interference – or so we thought.

New research led by Cornell University neuroscientist Nathan Spreng shows for the first time that engaging brain areas linked to so-called “off-task” mental activities (such as mind-wandering and reminiscing) can actually boost performance on some challenging mental tasks. The results advance our understanding of how externally and internally focused neural networks interact to facilitate complex thought, the authors say.

“The prevailing view is that activating brain regions referred to as the default network impairs performance on attention-demanding tasks because this network is associated with behaviors such as mind-wandering,” said Spreng. “Our study is the first to demonstrate the opposite – that engaging the default network can also improve performance.”

There are plenty of neuroimaging studies showing that default network activation interferes with complex mental tasks – but in most, Spreng explained, the mental processes associated with default network conflict with task goals. If you start thinking about what you did last weekend while taking notes during a lecture, for example, your note-taking and ability to keep up will suffer.

Spreng and his team developed a new approach in which off-task processes such as reminiscing can support rather than conflict with the aims of the experimental task. Their novel task, “famous faces n-back,” tests whether accessing long-term memory about famous people, which typically engages default network brain regions, can support short-term memory performance, which typically engages executive control regions.

While undergoing brain scanning, 36 young adults viewed sets of famous and anonymous faces in sequence and were asked to identify whether the current face matched the one presented two faces back. The team found participants were faster and more accurate when matching famous faces than when matching anonymous faces and that this better short-term memory performance was associated with greater activity in the default network. The results show that activity in the default brain regions can support performance on goal-directed tasks when task demands align with processes supported by the default network, the authors say.

“Outside the laboratory, pursuing goals involves processing information filled with personal meaning – knowledge about past experiences, motivations, future plans and social context,” Spreng said. “Our study suggests that the default network and executive control networks dynamically interact to facilitate an ongoing dialogue between the pursuit of external goals and internal meaning.”

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Antares Rocket at Sunrise

The Orbital Sciences Corporation Antares rocket, with the Cygnus spacecraft onboard, is seen on launch Pad-0A during sunrise, Sunday, Oct. 26, 2014, at NASA's Wallops Flight Facility in Virginia. The Antares will launch with the Cygnus spacecraft filled with over 5,000 pounds of supplies for the International Space Station, including science experiments, experiment hardware, spare parts, and crew provisions. The Orbital-3 mission is Orbital Sciences' third contracted cargo delivery flight to the space station for NASA. Launch is scheduled for Monday, Oct. 27 at 6:45 p.m. EDT.Image Credit: NASA/Joel Kowsky

from NASA http://ift.tt/1zw8Auu

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The postmortem for renowned 1930’s jazz musician Billy...

The postmortem for renowned 1930’s jazz musician Billy Tipton revealed that he was, by sex, a woman. Billy Tipton lived his entire adult life as a man, and perhaps only two cousins and a few romantic interests knew his assigned sex.

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James McConnell was born.

Visit http://ift.tt/1eWNk1f for free & comprehensive information & resources.

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