Mostrando las entradas con la etiqueta universe. Mostrar todas las entradas
Mostrando las entradas con la etiqueta universe. Mostrar todas las entradas

sábado, 30 de mayo de 2015

Scientific reveals that size are extraterrestrials

Aliens in movies are always shown as small creatures, but in reality could be much larger.

The scientific Fergus Simpson University of Barcelona, ​​calculated the minimum size required for that to exist intelligent life on other planets to survive.

According to his calculations, the aliens would have to weigh and measure the equivalent of a medium polar bear 650 lbs y 6 a 8 pies (300 kilograms y 2 a 2.5 metros) or more.





The expert came to this conclusion by applying a mathematical formula, assuming that aliens obey the same laws of conservation of animals on Earth.

Simpson calculations were achieved based on the minimum size necessary for life outside our planet can be made.

Therefore, throughout the universe, such as Earth, is likely smaller than large animals, says Simpson, since the number of planets inhabited by relatively small animals outnumber the number of worlds dominated large, chances are that we are on a planet with relatively small animals-and ourselves, probably one of the smallest intelligent beings.

jueves, 28 de mayo de 2015

The universe in which we live is a simulation on a supercomputer?

Although it seems science fiction, a group of physicists at the University of Washington has now succeeded in designing a test to prove if indeed we live in simulated on a computer universe.





The idea that humanity could be living inside an artificial universe came in an article by Nick Bostrom, a professor of Philosophy at the University of Oxford. The work was published in 2003 in the journal Philosophical Quarterly and since then has not left anyone indifferent.

A group of physicists from the University of Washington are developing a test that could take place in the near future and could help to resolve the question of whether or not actually live inside a computer simulation. 

To do Professor Martin Savage considers it necessary to model only a small part of our world, ie also create a sufficiently large simulation.

Starting from the basic laws of physics that govern the universe have been able to simulate relative success tiny portions thereof on a scale of a billionth of a meter, slightly higher than an atomic nucleus.

"If you get a simulation big enough it would emerge much like our universe," Savage says. Therefore, according to the scientist, it's just a matter of looking at the universe we live in an analog "signature" that they are using in our small-scale simulations.

Something also to Savage and his colleagues, is perfectly feasible. In fact, they suggest that the "signature" that would prove that ours is an artificial universe could appear as a limitation on the power of cosmic rays (the radiation reaching us from distant stars and galaxies).

According to the idea of ​​Savage, the highest-energy cosmic rays could not travel on the edges of the artificial grid that simulates space-time in a hypothetical computer model, but should travel diagonally, so that their interactions would not be equal in all directions, as expected. If it can be shown that such "unnatural" limitation exists, there would be no question that we live within a simulation.


source(in spanish):http://actualidad.rt.com/

viernes, 22 de mayo de 2015

Discover the brightest galaxy in the cosmos

Imagine what it would be three hundred billion (10 ^ 12) suns. If you look directly to our central star can blind us forever, the thought of a brilliant mass of this caliber is unimaginable. Well that's WISE J224607.57-052635.0. It is not the friendliest in the world name, but it is the brightest galaxy ever seen by mankind in our universe. And it has been recently discovered by the space telescope WISE, which has cataloged this and other giants like within a new category called ELIRGs or extremely bright infrared galaxies. These are the most luminous galaxies in the known space. And of them, this is the queen of all.

galaxia mas brillante

Photo: NASA



This is the brightest galaxy

The brightest galaxy in the universe is very, very far from here. We've detected only through the issuance of its infrared light. And the data, the researchers believe is a mass mammoth with a monstrous black hole at its center. So very huge and colossal revolves around a disk of matter heated plasma composed of billions of degrees. The amount of energy emitted such an object is simply indescribable. High energy jets consist of X-rays, visible light and ultraviolet. But if so, should not we see the visible light? At the end of the day, it is the brightest galaxy in the universe, observe how the galaxy was made 12.5 million añoses a galaxy right? Well, the visible light actually strikes the dust clouds around, warming.It is these that transmit infrared light outside. And it is thanks to that that WISE has detected the galaxy. WISE telescope carries the universe in infrared observing only since 2010. Since then discovered for the first time ELIRGs, galaxies hitherto never observed and are characterized by extremely bright. According to calculations, the light has traveled about 12.5 billion years to reach us, so we're seeing a galaxy of long ago. Yet even then this galaxy had a black hole equivalent to billions of solar masses about our sun and has since gone ten million years. Now simply it has to be tremendous.


ELIRGs and evolution of the universe


How can black holes become so huge? There are several hypotheses about which are the subject of study in this research and other partners. First, it could be that his "seed" was exceptionally large. That is, that the black hole from which embryonic were already huge. Much more than was thought until now. The other two explanations, as discussed from NASA involve breaking or forcing some laws on the limits of black holes. Specifically, it is explaining the Eddington limit which is the maximum size that should be able to reach a black hole feeding on surrounding matter. This limit, explained, "The ELIRGs are among the objects discovered more recently" has been overcome in other specific occasions. But achieving such a size required to "break the limit" several times.


On the other hand, the black hole could be feeding material much faster than expected (and what they thought could happen), forcing its growth limit. In any case, astrophysicists are fascinated with the implications this has on the cosmic evolution of galaxies. The ELIRGs are very new galactic objects, still not well understood and that keep many mysteries. Mysteries universally, that is. Understanding how it appears, how they develop and how they will end you can tell us much of our universe. So far, only they have been discovered about 20 ELIRGs, including the brightest galaxy is cosmos. But we have only begun to explore this aspect of the sky. There are still many surprises waiting in between the huge black holes and galaxies brighter.



Source(in spanish):http://hipertextual.com


miércoles, 20 de mayo de 2015

Scientist Michio Kaku surprised with finding irrefutable evidence: God does exist



The American physicist and science writer, one of the most respected in the field of quantum physics luminaries, ensures that there is an unknown force that governs everything.



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image: http://www.flickr.com/people/34458623@N03
The renowned American theoretical physicist Michio Kaku, famous for making the revolutionary string theory (fundamental physics model that assumes that seemingly specific material particles are actually "vibrational states") recently caused a small tremor in the community then scientist who claimed to have found evidence of the existence of an intelligent man unknown force that governs nature that is, something quite similar to the concept that many have of God as creator and director of the universe entity.

In reaching this conclusion Michio Kaku used a new technology created in 2005 that allowed him to analyze the behavior of matter at the subatomic scale, relying on a "primitive semi-tachyon radio." Tachyons, of course, are all those hypothetical particles able to move at superluminal speeds, ie, are theoretical particles able to "take off" the matter of the universe or the vacuum contact with it, thus leaving the matter in its purest form, totally free from the influences of the world around them.
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According to the physical, observing the behavior of these tachyons in several experiments, concluded that humans lived in a kind of "Matrix", ie, a world governed by laws and principles conceived by a kind of great smart architect . "I have concluded that we are in a world made by rules created by an intelligence, not unlike a favorite computer game, but of course, more complex and unthinkable," said the scientist.

Michio Kaku added, "analyzing the behavior of matter at the subatomic scale, hit by the pitch radius semi tachyon for the first time in history, a tiny point in space, totally free of any influence of the universe, matter, force, or law, is perceived in an unprecedented way absolute chaos. So, what we call chance no longer makes more sense, because we are in a universe governed by established rules and hazards not determined by universal plane. This means that, in all probability, there is an unknown force that governs everything, "said the scientist".

Michio Kaku added, "Someone did Einstein once the big question: Is there a God? And Einstein replied that, first, to be a scientist you have to specify well what is understood as God. If you understand God as a figure that is prayed, a figure that gives and takes part, then the answer is no. But he believed in a God represented by the order, harmony, beauty, simplicity and elegance, the God of Spinoza. The universe could be chaotic and ugly, but instead is beautiful, simple and governed by simple mathematical rules.

jueves, 14 de mayo de 2015

NASA may have found a way to travel as fast as in 'Star Trek'



Fly to the moon in FOUR hours: The British scientist who says he's found the secret of Star Trek's 'warp speed'

Anyone who has ever watched an episode of Star Trek or a Star Wars film will know how it works.

The good guys are minding their business in outer space when suddenly the Klingons or the Dark Empire bear down on them out of nowhere.
There is only one way out. At the flick of a switch, our heroes are flashed — in a blur of passing stars — to safety elsewhere in the universe. 
Call it warp drive or a hyper drive, it adds up to the same thing: a miraculous power source that allows a spacecraft to fly at unimaginable speeds.
But while it’s so far confined to the realms of sci-fi, the concept could become reality.
U.S. space agency Nasa is thought to have successfully tested a revolutionary new power source that could enable spacecraft to travel to the Moon in just four hours instead of more than three days and to Mars in two or three weeks instead of seven months.
Compact enough to fit into a suitcase, this whizzy new device could — it is claimed — keep flying for eons, at the equivalent of an astonishing 450 million miles an hour.
Load up the spacecraft, we’re all off for a long weekend on Venus!
The invention fuelling such hopes is called an electromagnetic drive or EmDrive — and it’s powered by a device similar to that found in a microwave oven.
It was invented by British scientist Roger Shawyer, who has endured years of ridicule since he unveiled it nearly a decade ago.
Critics insisted his invention was a scientific impossibility because it broke one of the basic laws of physics governing the universe.
This rule is Sir Isaac Newton’s third law: that if you push in one direction, you accelerate in the opposite.
Indeed, every rocket engine ever made has fired burning rocket fuel out behind it, thus powering the craft forward.
But the EmDrive doesn’t use a propellent. It works by converting electric power — from solar panels or a small on-board nuclear reactor — into forward thrust. According to some scientists, it is the ‘impossible drive’.
The scepticism, however, hasn’t stopped EmDrive’s development rights being bought by aircraft giant Boeing and the UK Government funding the early development of Mr Shawyer’s ideas.
Now retired, he acts as a consultant to a British company that is continuing the research, and he says other countries are developing similar designs. In fact, five years ago the Chinese claimed they had built an EmDrive and proved it worked — but no one believed them.
It’s harder to be sceptical when the news comes from Nasa — an organisation that put men on the Moon and sent rockets to Mars.
According to Nasa engineer Paul March, it has conducted the first successful tests of an EmDrive in a vacuum, to recreate the emptiness of outer space.
Some suggest the EmDrive is set to become one of many wonderful British inventions which — for lack of investment and vision — end up being hijacked by someone else.
Examples of this lamentable tendency include the tank, the jet airliner and the programmable electronic computer.
When I tracked down Mr Shawyer to his base in Havant, Hants, he said he was pleased Nasa was ‘having fun’ with his creation and felt some vindication after years of scepticism.
That said, he seemed a bit peeved that the Americans were grabbing all the attention.
An aerospace engineer who worked for the Galileo space project to build a European satnav system, Mr Shawyer unveiled his idea in 2006.
He promised it would not only speed us to new galaxies, but ‘put an end to wings and wheels’ by making traditional forms of transport redundant.
His prototype looks like something sci-fi writer Jules Verne might have dreamt up to blast Victorians to the Moon.

Read more: http://www.dailymail.co.uk/sciencetech/article-3080846/Fly-moon-FOUR-hours-British-scientist-says-s-secret-Star-Trek-s-wrap-speed.html#ixzz3aApwtKSA

miércoles, 13 de mayo de 2015

Giant asteroid will pass close to earth



A giant asteroid, measuring over a kilometer across, will pass very close to the Earth on Thursday (May 14, 2015), according to NASA.


asteroid image



The asteroid called 1999-FN53 is the largest object (more than 10 times bigger than other meteorites) currently visible on NASA's Near Earth Object radar.

First discovered in March 1999, will brush close to Earth at a distance of 26.4 lunar distances, about 10 million kilometers from Earth, said NASA.

There are speculations that if the asteroid strikes the Earth, the impact would be catastrophic, leading to the deaths of 1.5 billion people.

According to Bill Napier, a professor of astronomy at the University of Buckinghamshire, if the asteroid were to hit the sea, it would send a plume of halogen gasses into the stratosphere destroying the ozone layer.

“This would allow unrestricted sunlight to hit the Earth, the sky would heat up becoming strong enough to burn vegetation,” he added.

The asteroid 1999-FN53, which is currently dashing through space at a speed of about 14 kilometers per second, is an eighth of the size of Mount Everest.

In March, asteroid 2014-YB35, came within 3 million miles of Earth.

NASA predicted that the next huge asteroid to hurtle past Earth is Icarus, which is also a kilometer across and will fly by our planet on June 16 at just 21 lunar distances.


source:http://zeenews.india.com/news/space/huge-asteroid-to-pass-close-to-earth-on-thursday_1594676.html