Showing posts with label Physics. Show all posts
Showing posts with label Physics. Show all posts

Sunday, November 8, 2015

New Subatomic Particles found that defy the Standard Model of Physics

It looks like new particles have been found that defy the Standard Model of physics. There goes the objection by materialist's such as physicist Sean Carroll who claims that all known particles and laws have been discovered by the Standard Model of Physics. This new finding says not so fast.

This last bit of the article was very interesting. "Lepton universality is truly enshrined in the Standard Model. If this universality is broken, we can say that we’ve found evidence for non-standard physics”, completed Professor Jawahery".


Read more here: http://www.geeksnack.com/2015/09/02/subatomic-particles-that-defy-the-standard-model-of-physics/

Tuesday, November 18, 2008

Unknown Structures Tuggings At Universe Says A New Study

This is called ''dark flow'' which is a named nodded up with two other unexplained astrophysical phenomena[dark matter and dark energy].

The article continues on by saying

The presence of the extra-universal matter suggests that our universe is part of something bigger—a multiverse—and that whatever is out there is very different from the universe we know, according to study leader Alexander Kashlinsky, an astrophysicist at NASA's Goddard Space Flight Center in Maryland.

The theory could rewrite the laws of physics. Current models say the known, or visible, universe—which extends as far as light could have traveled since the big bang—is essentially the same as the rest of space-time (the three dimensions of space plus time).

You can check out the article here. Which was published in national geographic.

http://news.nationalgeographic.com/news/2008/11/081105-dark-flow.html

Sunday, June 22, 2008

Is there a hidden planet in our solar system ?

An icy, unknown world might lurk in the distant reaches of our solar system beyond the orbit of Pluto, according to a new computer model. The hidden world — thought to be much bigger than Pluto based on the model — could explain unusual features of the Kuiper Belt, a region of space beyond Neptune littered with icy and rocky bodies. Its existence would satisfy the long-held hopes and hypotheses for a "Planet X" envisioned by scientists and sci-fi buffs alike. "Although the search for a distant planet in the solar system is old, it is far from over," said study team member Patryk Lykawka of Kobe University in Japan. The model, created by Lykawka and Kobe University colleague Tadashi Mukai, is detailed in a recent issue of Astrophysical Journal. If the new world is confirmed, it would not be technically a planet. Under a controversial new definition adopted by the International Astronomical Union last week, it would instead be the largest known "plutoid." The Kuiper Belt contains many peculiar features that can't be explained by standard solar system models. One is the highly irregular orbits of some of the belt's members. The most famous is Sedna, a rocky object located three times farther from the sun than Pluto.

Sedna takes 12,000 years to travel once around the sun, and its orbit ranges from 80 to 100 astronomical units. One AU is equal to the distance between the Earth and the Sun. According to the model, Sedna and other Kuiper Belt oddities could be explained by a world 30 to 70 percent as massive as Earth orbiting between 100 AU and 200 AU from the sun.

Monday, June 9, 2008

Radio Astronomers Detect ''Baby Quasar''

An international group of radio astronomers has found an unexpected morphology in the most distant radio quasar ever. This was done using the world's most sensitive network of radio telescopes called the European VLBI Network (EVN). The results of their discovery are published in the Astronomy and Astrophysics journal on 5 June. Quasars are the most powerful 'engines' in the Universe. Observed with a radio telescope they look like stars, but they are much farther away from Earth. Because they are so powerful, their light can be seen by modern telescopes from distances comparable with the size of the Universe. The observation of the newly found quasar was conducted with ten radio telescopes in Europe (including the Westerbork Synthesis Radio Telescope in the Netherlands), China and South Africa, at the frequency of 1.6 GHz (wavelength of 18 cm). The quasar, called J1427+3312, can be seen in the image. It shows a double morphology and the components are about 480 light years apart. This kind of double morphology, combined with a steep radio spectrum, is typical for young radio sources. What makes the quasar in the picture so interesting is its extremely distant location. It is so far away from our Galaxy that it takes the light it emits more than 90% of the age of the Universe to reach us. In other words, what we see corresponds to the time when the Universe was less than 10% of its present age. Being so distant, the quasar J1427+3312 is located relatively close to the inner edge of the so called Epoch of Reionisation (EoR) - the cosmological 'Dark Ages'. In a sense, the EoR is responsible for the appearance and composition of the Universe we live in - the variety of galaxies, stars and, ultimately, planets. The reionisation is one of the most tantalizing subjects for investigations with the next generation of radio telescopes, LOFAR and the Square Kilometre Array (SKA).

Currently Dutch efforts in radio astronomy focus largely on the implementation of LOFAR and SKA. The quasar J1427+3312, in the words of Leonid Gurvits, Senior Astronomer at the Joint Institute for VLBI in Europe (JIVE, Dwingeloo, the Netherlands), is "a powerful lighthouse that happens to be located at the place where we want to light up surroundings in search for something terribly important; one day, with new radio telescopes, we will 'use' this lighthouse as a handy tool in the search for EoR signatures.

Sunday, June 1, 2008

Ice found underneath Mars lander

A view of the ground underneath NASA's Phoenix Mars Lander adds to evidence that descent thrusters dispersed overlying soil and exposed a harder substrate that may be ice. The image received Friday night from the spacecraft's Robotic Arm Camera shows patches of smooth and level surfaces beneath the thrusters. "This suggests we have an ice table under a thin layer of loose soil," said the lead scientist for the Robotic Arm Camera, Horst Uwe Keller of Max Planck Institute for Solar System Research, Katlenburg-Lindau, Germany. "We were expecting to find ice within two to six inches of the surface," said Peter Smith of the University of Arizona, Tucson, principal investigator for Phoenix. "The thrusters have excavated two to six inches and, sure enough, we see something that looks like ice. It's not impossible that it's something else, but our leading interpretation is ice." The Phoenix mission is led by Smith at the University of Arizona with project management by NASA's Jet Propulsion Laboratory, Pasadena, Calif.

, and development partnership at Lockheed Martin, Denver. International contributions come from the Canadian Space Agency; the University of Neuchatel, Switzerland; the universities of Copenhagen and Aarhus, Denmark; Max Planck Institute, Germany; and the Finnish Meteorological Institute.

Saturday, May 10, 2008

European probe finds missing matter

rAn orbital x-ray telescope has found a chunk of matter in the universe whose existence had long been theorised but evidence for which had been lacking, the European Space Agency (ESA) said on Wednesday. The discovery made by ESA's XMM-Newton telescope is part of so-called baryonic matter, which comprises less than five percent of the cosmos. Most of the universe consists of matter and energy of an unknown nature, which astrophysicists call "dark" and which is believed to be distributed in a web-like structure. "Dark energy," which causes an accelerated expansion of the universe after the Big Bang that created it, accounts for some 72 percent of the total, and "dark matter" -- heavy particles still waiting to be discovered -- accounts for around 23 percent, according to this theory. That leaves just 4.6 percent to comprise normal, or baryonic, matter, the category for the protons and neutrons that compose it. But only a small part of this stuff has been found. All the stars, galaxies and gas observed in the universe account for less than half of the baryons that should be there. The new claim is based on observation of a pair of distant galaxy clusters called Abell 222 and Abell 223 located 2.3 billion light years from Earth. Images and spectra found the two clusters were linked by a bridge of hot gas of a very low density. The astronomers believe that such low-density gas permeates the filaments of the cosmic web around the universe. They were able to spot this one because of its high temperature and because of a stroke of luck.

The thread was luckily in the telescope's line of sight, rather than visible from a narrower angle. "The hot gas that we see in this bridge or filament is probably the hottest and densest part of the diffuse gas in the cosmic web, which is believed to constitute about half of the baryonic matter in the universe," said lead researcher Norbert Werner of the SRON Netherlands Institute for Space Research.

Friday, April 25, 2008

Black holes reveal more secret

Scientists say they have unlocked some of the secrets behind black holes, the gravitational fields known for sucking up light and stars from the Universe. In a report in the journal Nature, US researchers say they have worked out how black holes emit jet streams of particles at close to light speed. The University of Boston team say the streams originate in the magnetic field near the edge of the black hole. They say it is within this region that the jets are accelerated and focused. Despite the fact that it is probable that a black hole lurks at the centre of our Milky Way galaxy, astronomers still know very little about these celestial monsters which vacuum up almost everything in their path, even light. Professor Alan Marscher of the University of Boston and his colleagues claim they have delved deeper than ever into their heart. Using almost every type of telescope known to humankind, Prof Marscher believes he has worked out where and how the jets - or blazars - are formed. Using an array of 10 powerful radio telescopes, aimed at the galaxy BL Lacertae, the researchers studied a black hole just as it was sending forth a blazar jet. The astronomers had suspected that the supermassive black hole was spewing out plasma jets in a winding corkscrew, and they say that their observations have now confirmed just that. "We have gotten the clearest look yet at the innermost portion of the jet, where the particles actually are accelerated," Prof Marscher said in a statement. University of Michigan astronomy professor Hugh Aller, who worked on the project, told Reuters news agency that the process of accelerating the material to nearly the speed of light was similar to what happened in a jet engine.

"We think it is focused by a nozzle of sorts and it comes out at us," he was quoted by Reuters as saying. However, the BBC's science correspondent Neil Bowdler says despite this breakthrough, scientists are no closer to finding what lies within the black hole - beyond what is called the event horizon In fact, if the theoretical physicists are right, our correspondent says, then we will never be able to see inside these strange phenomena.

Saturday, April 19, 2008

NASA, Europe explore mission to outer planets

Scientific and technical teams from NASA and the European Space Agency are fleshing out ideas for the next mission to fly to an outer planet — either to Jupiter or Saturn. A decision on which of those two exploration targets will be the destination for the space agency's next multibillion-dollar flagship mission is expected by year's end. "We have the outer planet flagship mission in the (NASA) budget ... I do believe it will happen," said Fran Bagenal, a professor of astrophysical and planetary sciences at the Laboratory for Atmospheric and Space Physics at the University of Colorado, Boulder. "I couldn't have said that four years ago ... now I have great confidence that this will happen." Bagenal is chair of the Outer Planets Assessment Group, which was established by NASA in late 2004 to identify scientific priorities and pathways for exploration in the outer solar system. In 2007, NASA completed a series of studies for flagship missions, honing down the list to the two candidate missions that now are under further study by both NASA and ESA. During a two-day OPAG meeting in late March, officials provided a status report on the two outer planet exploration concepts now on the table: a Europa-Jupiter System Mission and a Titan-Saturn System Mission.

Each of those mission scenarios has multiple components with both ESA and NASA contributing to whichever outer planet investigation is down-selected. The Europa-Jupiter mission involves two orbiters with instruments designed to operate in the severe radiation environment of Jupiter. In addition to ESA and NASA, Russia also has expressed interest in the mission, proposing a Europa lander.

Wednesday, April 16, 2008

A black hole in big bang

A black hole in big bang

user posted image rAnthony North: Big Bang happened like this. Once upon a time there was a 'singularity' that contained everything that was. Suddenly it blew up, releasing fundamental particles that expanded to fill space. Gravity came into being and particles came together into stars and planets. More complicated particles were 'cooked' in the stars, and were released through supernova, to form other heavenly bodies, and from them eventually came life. The theory is neat and tidy.: It came out of the realization that the universe was expanding, and when background radiation was found, identified as residue of the Big Bang, the theory gained consensus. Of course, there are massive problems with the theory. The 'singularity' is nothing but a mathematical point of infinity, with no physical validity, and the math of the theory means there is 90% of the matter and energy in the universe missing. Exotic theories come and go to account for this lack of universal weight.: Dark matter and dark energy are among them. Then there is the search for 'mass' in massless particles. It doesn't occur to science that the theory may be wrong. Previous to Big Bang was the Steady State theory. Here, matter was continually created, the universe renewing itself. But as no means was known how it did this, it was rejected for Big Bang, even though no one knows how it did this. Big bang fits western philosophy.: In the east, everything is cyclical, renewing itself, whilst in the west, we are linear. Things must move from a beginning to an end.

Hence, it follows that the universe must also have history with a beginning and an end. Is this philosophical mind-set the main reason we prefer Big Bang over Steady State? After all, neither can be proved. Of course, the argument is that background radiation seals it. But in other areas of science, it is accepted that nothing can have only one answer. It seems to me that big bang theory has got itself in a steady state.: And maybe it's time to look again at Steady State itself.

Sunday, March 23, 2008

Mars is 'covered in table salt

user posted image rMars appears to be covered in salt crystals from ancient dried-up lakes, new evidence suggests. A Nasa probe has found signs that the southern hemisphere is dusted with chloride mineral, perhaps "table salt". US scientists think the mineral formed when water evaporated from salty lakes or soil billions of years ago. The deposits, similar to salt-pans on Earth, are a good place to search for traces of past life preserved in salt, they report in the journal Science. The evidence comes from a camera on Mars Odyssey, which has been mapping the Red Planet since early 2002. The camera images Mars in the visible and infrared parts of the spectrum in order to work out the distribution of minerals on the surface. It found about 200 places with spectral "fingerprints" consistent with chloride salt deposits. All were in the middle to low latitudes of the ancient, heavily cratered terrain in the southern highlands. Team member Professor Philip Christensen, of the School of Earth and Planetary Exploration at Arizona State University, Tempe, said the most likely chloride mineral "would be good old table salt (sodium chloride)". He said many of the deposits lay in basins with channels leading into them, the kind of feature that is consistent with water flowing in over a long time. He told BBC News: "Two possible mechanisms would be the evaporation of a large body of water (like a salt lake on Earth), or capillary action in the soil that could draw salt-rich water toward the surface, where the water evaporates and the salt is left behind and accumulates.

"Either case is exciting because it implies a large amount of water near the surface." Warmer, wetter: The team - which also includes members from the University of Hawaii, University of Arizona and Stony Brook University - thinks the deposits formed about four billion years ago, when Mars was probably much warmer and wetter.

Saturday, February 23, 2008

Was the big bang really teh beginning?

For decades, physicists have accepted the notion that the universe started with the Big Bang, an explosive event at the literal beginning of time. Now, computational physicist Neil Turok is challenging that model -- and some scientists are taking him seriously. According to Turok, who teaches at Cambridge University, the Big Bang represents just one stage in an infinitely repeated cycle of universal expansion and contraction. Turok theorizes that neither time nor the universe has a beginning or end. It's a strange idea, though Turok would say it's no stranger than the standard explanation of the Big Bang: a singular point that defies our laws of physics, where all equations go to infinity and "all the properties we normally use to describe the universe and its contents just fail." That inconsistency led Turok to see if the Big Bang could be explained within the framework of string theory, a controversial and so-far untested explanation of the universe as existing in at least 10 dimensions and being formed from one-dimensional building blocks called strings. Within a school of string theory known as m-theory, Turok said, "the seventh extra dimension of space is the gap between two parallel objects called branes. It's like the gap between two parallel mirrors. We thought, What happens if these two mirrors collide? Maybe that was the Big Bang."

Turok's proposition has drawn condemnation from string theory's many critics and even opposition from the Catholic Church. But it's provoked acclaim and wonder, too: He and Princeton University physicist Paul Steinhardt published Endless Universe: Beyond the Big Bang last year, and Turok -- also the founder of the South Africa-based African Institute for Mathematical Sciences -- won 2008's first annual TED Prize, awarded to the world's most innovative thinkers.

Sunday, February 17, 2008

Organic Molecules have been detected

Organic molecules – in the form of methane – have been detected on a planet outside our solar system for the first time. The giant planet lies too close to its parent star for the methane to signal life, but the detection offers hope that astronomers will one day be able to analyse the atmospheres of Earth-like worlds.

Astronomers Mark Swain and Gautam Vasisht of Caltech in Pasadena, US, and Giovanna Tinetti of University College London, UK, used the Hubble Space Telescope to observe the giant planet HD 189733b, which is slightly more massive than Jupiter and lies 63 light years from Earth.

Because the planet crosses the face of its parent star as seen from Earth, some starlight is periodically filtered through the planet's atmosphere, where different chemicals absorb particular wavelengths.

The observations confirm an earlier tentative detection of water vapour and reveal the presence of methane gas.

"Initially, that is surprising," says Sara Seager of MIT in Cambridge, US, who was not involved in the study. Because HD 189733b orbits very close to its parent star – just 10% of Mercury's distance from the Sun, it is very hot, with atmospheric temperatures of about 700° Celsius. "When the temperature is this high, the dominant form of carbon should be carbon monoxide, not methane," says Seager.

The authors suggest that some ill-understood chemical process might be responsible, either concentrating the methane in cooler parts of the atmosphere, or generating extra methane directly. Alternatively, the methane might simply mean that the planet happens to be very rich in carbon, Seager says.

This combination of water and organic molecules would be a promising one for life if it were found in a less hostile spot than the atmosphere of a searing gas giant.

Eventually, astronomers hope to be able to analyse the atmospheres of smaller planets more akin to the Earth, and the new study is a big step in that direction, says Seager. "The path that we're on is towards rocky planets," she told New Scientist. "I'm really excited about this."

Thank you it's time to retire this blog!

Retiring this blog it was fun but have been too busy to keep up with it. I appreciate all the views I have gotten.