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Archive for the ‘cosmology’ category: Page 249

May 1, 2019

Astronomers Discover ‘Extraordinary’ Black Hole That Is Warping Space-Time

Posted by in categories: cosmology, physics

Nearly 8,000 light-years away from Earth, astronomers have discovered a black hole that keeps rapidly swinging out jets of plasma clouds into space, according to a new study.

The black hole, known as V404 Cygni, doesn’t behave like others. The jets shoot out possibly within minutes of each other and in all different directions. And while the researchers admit that black holes are some of the most extreme objects in the universe, this one is different.

“This is one of the most extraordinary black hole systems I’ve ever come across,” study author James Miller-Jones said in a statement. Miller-Jones is also an associate professor at Curtin University’s International Centre for Radio Astronomy Research.

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Apr 30, 2019

Dark Matter BREAKTHROUGH: Mystery substance ‘EXISTS’ and explains 90% of the universe

Posted by in categories: cosmology, innovation

DARK MATTER is not a hypothetical substance but is real and is a fundamental building block of the universe, according to a shocking new study.

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Apr 29, 2019

Astronomers Spot Distant Black Hole Spinning So Fast That It Warps Space-Time

Posted by in categories: cosmology, physics

Last observed in 2015, the black hole is spewing out ‘wobbly’ plasma jets that move so fast they change orientation within minutes.

Some 8,000 light-years from Earth in the Cygnus constellation (“The Swan”), a small black hole weighing just nine times the mass of Earth’s sun is gobbling up a sun-like star. The black hole and its stellar victim are locked together in what astronomers call a binary system and orbit each other once every 6.5 days – with spectacular effects, the National Radio Astronomy Observatory (NRAO) is reporting.

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Apr 29, 2019

The Universe Might Be a Billion Years Younger Than We Thought

Posted by in category: cosmology

New data from the Hubble Space Telescope confirms that the universe is expanding nine percent more rapidly than theoretical calculations predicted.

Those original calculations were based on data from the early universe, so many scientists suspected that something sped up the works. But the new Hubble data suggests that the universe could be substantially younger than previously believed — perhaps by as much as a billion years, according to the Associated Press.

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Apr 28, 2019

Dark Matter Scientists Observe the Rarest Event in History

Posted by in category: cosmology

Researchers at the XENON dark matter observatory have spotted something incredibly rare. Unfortunately, it’s not dark matter, but it is the next best thing. The detectors at the observatory have spotted the decay of xenon-124, the rarest event ever recorded in human history.

The XENON experiment is designed to detect dark matter, which is not an easy task. The reason that dark matter is so mysterious is that it pretty much never does anything, which makes it hard to spot. Dark matter doesn’t give off light, or have any sort of magnetic field, and it almost never interacts with normal matter in any way.

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Apr 28, 2019

Supermassive Black Hole Resides Inside a Supermassive Galaxy

Posted by in category: cosmology

The eyes of the world turned to Messier 87 earlier this month when scientists released the first ever image of a black hole. And this image from NASA’s Spitzer Space Telescope shows more about the giant galaxy in which the now-famous black hole resides.

The imaged black hole was truly gargantuan, with a mass equivalent to 6.5 billion times that of our Sun. And the galaxy surrounding it, Messier 87, is equally huge. Known as a supergiant elliptical galaxy, it is one of the most massive galaxies in the universe and hosts a large number of globular clusters.

The image captured by Spitzer shows the galaxy in infrared, as opposed to the radio wavelengths used to capture the black hole image. The infrared light coming from the galaxy at wavelengths of 3.6 and 4.5 microns is shown in blue and green, which is what marks the stars in the image. The areas of red are dust features which glow with a wavelength of 8.0 microns.

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Apr 27, 2019

Say Hello To Neutron Stars, Your Worst Nightmare

Posted by in categories: cosmology, physics

Yes, black holes get all of the attention. They’re mysterious, they lurk in the shows of interstellar space, they break the laws of known physics, they can trap you forever, they have a cool-sounding and easy-to-understand name. They’ve got great branding.

But some things are even weirder and scarier than black holes. And what makes them weirder and scarier is that they’re weird and scary within the known laws of physics. Which means we understand them. Which means we can explain, in great and gruesome detail, just how awful they are.

Take, for example, the neutron star.

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Apr 27, 2019

The World’s Largest Atom Smasher Could Be Tweaked to Hunt ‘Dark World’ Particles

Posted by in categories: cosmology, particle physics

When it reopens in 2021, the Large Hadron collider should be able to detect rare particles with possible links to the world of dark matter and energy.

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Apr 26, 2019

Astronomers Just Detected The Universe Is Expanding Much Faster Than It Should Be

Posted by in category: cosmology

The latest measurement of the expansion rate of the Universe is in, and it has confirmed with more certainty than ever that we have a real dilly of a pickle on our hands. Once again, the result has shown that the Universe is expanding much faster than it should be based on the conditions just after the Big Bang.

The Universe’s rate of expansion is called the Hubble Constant, and it’s been incredibly tricky to pin down.

According to data from the Planck satellite that measured the cosmic microwave background (the conditions of the early Universe just 380,000 years after the Big Bang, the Hubble Constant should be 67.4 kilometres (41.9 miles) per second per megaparsec, with less than 1 percent uncertainty.

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Apr 26, 2019

Dark-matter detector observes exotic nuclear decay

Posted by in categories: cosmology, particle physics

From the point of view of nuclear theory, the decay rates of both two-neutrino and neutrinoless double electron capture can be connected to quantities called nuclear matrix elements. Such quantities contain information about nuclear structure that is extracted from nuclear models and can be applied by researchers in the field of nuclear-structure theory.


For half a century, our view of the world has been based on the standard model of particle physics. However, this view has been challenged by theories that can overcome some of the limitations of the standard model. These theories allow neutrinos to be Majorana particles (that is, they are indistinguishable from their own antiparticles) and predict the existence of weakly interacting massive particles (WIMPs) as the constituents of invisible ‘dark matter’ in the Universe. Majorana neutrinos mediate a type of nuclear decay called neutrinoless double-β decay, an example of which is neutrinoless double electron capture. A crucial step towards observing this decay is to detect its standard-model equivalent: two-neutrino double electron capture. In a paper in Nature, the XENON Collaboration reports the first direct observation of this process in xenon-124 nuclei, using a detector that was built to detect WIMPs.

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