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Q: Is it true that a black hole isn't a hole at all?

Watch a TV show on this fact.

6 weeks 5 days ago in  Teaching & Learning - Other cities

 
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'Black hole' is a characteristical term used in English, earthy language. angel

 

It is resemblance of happening in the Universe ..., i.e. strong gravity that nothing can escape ...

 

'Black hole' in Universe and 'black hole' on golf course are two very different things ... 

 

I guess, TV is assembled in the framed hole ...

 

I prefer to watch washing machine's cycles over the TV ...

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6 weeks 5 days ago
 
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Why you asking people on here for? People on here can barely figure how to get a visa for china let alone how a black hole works.

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'Black hole' is a characteristical term used in English, earthy language. angel

 

It is resemblance of happening in the Universe ..., i.e. strong gravity that nothing can escape ...

 

'Black hole' in Universe and 'black hole' on golf course are two very different things ... 

 

I guess, TV is assembled in the framed hole ...

 

I prefer to watch washing machine's cycles over the TV ...

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https://science.howstuffworks.com/antarcticas-spooky-cosmic-rays-might-s...

 

Antarctica's Spooky Cosmic Rays Might Shatter Physics As We Know It

 

Something strange is happening above the frozen landscape of Antarctica.

When scientists launched a science balloon mission called the Antarctic Impulsive Transient Antenna (ANITA) over the continent in 2006, a cosmic ray pinged off one of its instruments. That isn't so strange. Cosmic rays fly from deep space all the time, and ANITA can detect them and measure their energies. But on this occasion, the cosmic ray didn't come from above, it came from below. This high-energy particle had emerged from the ice and traveled upward through the atmosphere. That's not something that cosmic rays are supposed to do.

During another ANITA flight in 2014, it happened again.

Cosmic rays come from some of the most energetic places in the universe — from supernovas to the swirling maws of black holes. To see a cosmic ray emerge from the earth suggests that this particle traveled from deep space and passed right through the planet before emerging on the other side. According to physics, however, this is impossible.

The thing with cosmic rays, which are high-energy protons and atomic nuclei, is that they have large cross-sections. In other words, they have no problem interacting with matter. Should a cosmic ray hit the Earth, it will be stopped in its tracks by the atmosphere, like a bullet hitting a cinderblock. Conversely, neutrinos have very small cross-sections, meaning these ghostly particles zip through matter as if it weren't even there. Neutrinos are so weakly interacting with matter that trillions of them pass through our bodies unimpeded every second. But the particles that ANITA detected were not neutrinos, they were (what appear to be) cosmic rays, and they passed straight through our planet as if it weren't even there. Frankly, these cosmic rays are not normal.

Now researchers have revisited these ANITA events in a study submitted in September 2018 and found three similar detections of upward-moving cosmic rays in another Antarctica experiment called IceCube, a particle detector that's buried in the ice. They've arrived at an astonishing conclusion: These aren't regular, Standard Model cosmic rays; they could be evidence of exotic physics.

Exotic physics refers to physics that we don't currently understand, and scientists refer to it as "physics beyond the Standard Model." The Standard Model is a recipe book of sorts that tells the universe how subatomic particles (from electrons to photons to quarks) should behave. When the Large Hadron Collider (LHC) discovered the Higgs boson in 2012 — the particle that endows matter with mass — the Standard Model was complete; the theoretical framework that describes all interactions down to subatomic scales had been wrapped up.

There was, however, a problem. In fact, there were several. The Standard Model does not explain what dark matter and dark energy are. It also cannot explain why the majority of the universe is made from matter rather than antimatter. There's also the question of neutrino mass — the Standard Model falls short there, too. There are many mysteries that cannot be explained by the Standard Model recipe book, so physicists are hard at work trying to find evidence for a recipe book that's governing the universe in the shadows.

Maddeningly, the most complex experiments on Earth have yet to find any conclusive evidence of this shadowy realm, though there are clues. And, according to the researchers investigating the ANITA and IceCube anomalies, these cosmic ray detections may have opened a window into physics beyond the Standard Model, providing evidence of particles that look like cosmic rays and yet don't behave like cosmic rays.

"[U]nder conservative extrapolations of the [standard model] interactions, there is no particle that can propagate through the Earth [...] at these energies and exit angles. We explore here whether "beyond the Standard Model" particles are required to explain the ANITA events, if correctly interpreted, and conclude that they are," the researchers write in their study.

"Supersymmetry" (or SUSY) is one hypothetical exotic physics recipe book that may help explain what's going on. This hypothesis suggests that all the particles we know and love have SUSY particles (aka "sparticles"). These sparticles would provide balance to the Standard Model and may explain some of the mysteries that are confounding physicists and cosmologists. Could these phantom cosmic rays actually be a whole different type of particle emerging from supersymmetry?

It's too early to tell, and more data is needed, but it's tantalizing to think that we may have accidentally glimpsed physics beyond the Standard Model at the most extreme location on Earth.

 

 

 

 

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Don't tell anybody ... butT ... I heard voices ... and signals ...

 

https://www.forbes.com/sites/jamiecartereurope/2020/06/03/four-mysteriou...

 

Four ‘Mysterious Signals From Outer Space’ Are Coming From Galaxies Like Ours, Say Scientists

 

Go outside on a hot day and feel the Sun on your skin. Now imagine how much energy our Sun emits in an entire human lifetime.

Compress all that energy into a single burst lasting a mere millisecond and you’ll understand why fast radio bursts (FRBs) are one of the hottest topics in astronomy.

First discovered in 2007 at Australia’s Parkes radio telescope, FRBs are very brief, very bright single radio pulses that can last for several milliseconds. It’s estimated that several thousand per day are occurring over the entire sky.

The most famous one is FRB 121102, unusual because it’s been detected a few hundred times since it first “burst” onto the scene in 2014. FRB 121102 is coming from a small dwarf galaxy about three billion light-years from Earth.

So what’s causing them? Colliding stars? Supermassive black holes? Radio broadcasts from a distant alien civilization?

Well, it’s not black holes, according to Dr. Shivani Bhandari, an astronomer with CSIRO, Australia’s national science agency, whose new research published this week in The Astrophysical Journal Letters reveals that four FRBs are coming not from the heart of galaxies, but from their edge.

 

“These precisely localised fast radio bursts came from the outskirts of their home galaxies, removing the possibility that they have anything to do with supermassive black holes,” said Dr. Bhandari. Her team found the exact location of four new fast radio bursts—FRB 180924, FRB 181112, FRB 190102 and FRB 190608—by zooming-in on the radio sky using a detector on the Australian Square Kilometre Array Pathfinder (ASKAP) radio telescope in outback Western Australia.

Follow-up observations were made using some of the world’s largest optical telescopes, including Gemini South, the Very Large Telescope, Magellan Baade, Keck and the LCOGT-1m.

Although all of the four FRBs are coming from three or four billion light-years away, all were discovered to be coming from massive galaxies that are forming new stars at a modest rate, much like our own Milky Way.

“Just like doing video calls with colleagues shows you their homes and gives you a bit of an insight into their lives, looking into the host galaxies of fast radio bursts gives us insights to their origins,” said Dr. Bhandari.

The findings brings astronomers a step closer to understanding the origins of these mysterious signals from outer space.

As well as not being from black holes, the FRBs could also not have come from very bright explosions of stars or from cosmic strings, say the researchers, but could be from mergers of white dwarf stars or neutron stars.

Wishing you clear skies and wide eyes.

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Weblink reads 'free Ardern ...'

 

https://www.rt.com/newsline/491184-new-zealand-free-ardern/

 

PM Ardern ‘dances for joy’ although ‘job is not done’ as she declares New Zealand free of coronavirus

8 Jun, 2020 11:29 

 PM Ardern ‘dances for joy’ although ‘job is not done’ as she declares New Zealand free of coronavirusNew Zealand's PM Jacinda Ardern. © Reuters / Yiming Woo / File Photo

 

New Zealand lifted all social and economic restrictions except border controls after declaring it was free of the coronavirus. “While the job is not done, there is no denying this is a milestone,” Prime Minister Jacinda Ardern told reporters on Monday.

Public and private events, the retail and hospitality industries and all public transport were allowed to resume without the distancing rules still in place across much of the world.

Ardern said she had done a “little dance” when she was told there were no more active Covid-19 cases in New Zealand. “We are confident we have eliminated transmission of the virus in New Zealand for now, but elimination is not a point in time, it is a sustained effort,” the PM said.

The country has reported 1,154 infections and 22 deaths since the virus arrived in late February. “We will need to move cautiously here. No one wants to jeopardize the gains New Zealand has made,” Ardern said.

 

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Yes, black exist in the universe. And there were more than one black hole in the outer space of galaxy.

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This one went missing ... and I thought I didn't count it right ... Researchers detect pulsing rhythm from supermassive BLACK HOLE 600 million light years away

Heart of darkness: Researchers detect pulsing rhythm from supermassive BLACK HOLE 600 million light years away

Scientists have rediscovered the ‘heartbeat’ from a supermassive black hole 600 million light years away, after it went missing for several years.

Jun 10, 2020 11:24

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 Hoooo-rraaahhh ...  we ... did it ... 

 

https://www.rt.com/news/491516-iss-astronauts-create-fifth-state-of-matter/

 

Astronauts on board the International Space Station have created a rare state of matter in ways not possible here on Earth.

 

A new study published in the magazine Nature suggests that scientists have used a small facility called the Cold Atom Lab (CAL) to create rare Bose-Einstein condensates (BECs), also known as the fifth state of matter.

The CAL is capable of chilling atoms in a vacuum down to temperatures one 10-billionth of a degree above absolute zero – lower than in interstellar space. That’s why CAL – the size of a bedside table – has a reputation for being one of the coldest spots in the known universe.

 

BECs occur when the temperature of an ensemble of atoms almost reaches zero. These gaseous clouds of atoms then act collectively, rather than individually. First predicted by Albert Einstein and Indian mathematician and physicist Satyendra Nath Bose 95 years ago, they weren’t observed in a lab until 1995.

The reason why it was essential to make BECs in space is that, on Earth, gravity pulls them to the ground, making them disappear within fractions of a second. When created in the microgravity of space, however, BECs last longer – the atoms slow down and their wavelengths align, allowing us to study them for longer.

“It was recognized early on that microgravity would come in handy, and that going to space would give us a lot of advantages in terms of measurement time,” David Aveline, the lead author of the study and a scientist at NASA’s Jet Propulsion Lab, told Business Insider.

 

In the past, scientists have conducted some pretty rudimentary tests to achieve microgravity here on Earth – including using a specially constructed tower at the University of Bremen’s Center of Applied Space Technology and Microgravity, where researchers drop objects from tall heights to simulate the state.

With the CAL, BECs can be generated “amazingly quickly,” Maike Lachmann, who participated in the experiment, told German magazine Welt der Physik (World of Physics). This is because with the CAL, “you don’t have to cool large bodies, just a tiny atomic cloud,” meaning the entire process takes roughly two seconds.

 

The success of the CAL experiment could mark the first step in BECs becoming the basis of ultra-sensitive instruments that can detect the faintest signals from the most unknown aspects of our universe, such as gravitational waves and dark energy.

Aveline also told MIT that BECs have more practical applications, which “range from accelerometers and seismometers to gyroscopes.” 

Whatever the outcome of the study, the existence of CAL means that scientists can continue to get funky with how they experiment with atoms. Watch this space.

 

 

 

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OP never came back ..., but we are every day inching closer ...

 

There could be up to 6 billion Earth-like planets in the Milky Way according to explosive new research

There could be up to 6 billion Earth-like planets in the Milky Way according to explosive new research

Using a groundbreaking new model, scientists have calculated that there may be up to six billion Earth-like planets in the Milky Way galaxy, reviving hopes that colonization among the stars may still, one day, be viable.

Jun 17, 2020 12:28 

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Space-time ripples flip our understanding of black holes & neutron stars upside down

Space-time ripples flip our understanding of black holes & neutron stars upside down

The gravitational wave that washed over earth last year left scientists all the world over puzzled about its source. Now the mystery may have been solved, and any one of its potential implications is astonishing. Jun 23, 2020 20:14

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Black hole merger in deep space suggests universe’s darkest beings can create light

Black hole merger in deep space suggests universe’s darkest beings can create light

Analysis of a collision between two black holes in a distant region of space has revealed the existence of light, the first time such an association has been made with the phenomenon.

Jun 26, 2020 15:54

 

Analysis of a collision between two black holes in a distant region of space has revealed the existence of light, the first time such an association has been made with the phenomenon.

The merging of the two cosmic beasts was reported after a gravitational wave dubbed S190521g was detected in May 2019 by the twin Laser Interferometer Gravitational-wave Observatory (LIGO) facilities in the US and the Virgo observatory in Italy.

Gravitational waves are caused by objects moving at very high speeds, such as when two black holes orbit and then merge with one another. Significant gravitational waves signal a curvature in space-time.

Remarkably, the Zwicky Transient Facility (ZTF) at the Palomar Observatory in California, had its telescope focused on the same region of space at the same time – and detected an explosive flare in the vicinity.

The research, published in astrophysics journal Physical Review Letters on Thursday, is the first record of light being associated with the collision of black holes.

The revelation could help prove the existing theory that black hole mergers occur regularly in regions of material known as ‘accretion disks’ surrounding supermassive black holes. Prior to the discovery, black holes were thought to merge in stellar graveyards, where there is little gas or dust that can heat up and glow.

“The expectation has always been that there would be no electromagnetic counterpart” to the merger’s gravitational-wave signal, Matthew Graham, principal scientist at ZTF and first author on the study, explained to a CNET.

However, with the existence of a flare and therefore light – which is a form of electromagnetic radiation – it seems that this assumption is incorrect, and that black holes can and do exist in regions with matter that can be heated or lit up.

Accretion disks are intense environments filled with gas, dust, stars and black holes. The research team believed that it was in such a location that the pair of black holes merged, an act that disturbed the surrounding space dust and debris and caused the flare as a result.

"The new merged black hole gets this kick and there's material dragged along with that. [It] slams into this gaseous environment around it and you get a shock front – that's the initial cause of the flare," Graham told CNET.

The LIGO/Virgo collaboration is yet to confirm what type of colossal cosmic event occurred but that, if it was as the researchers suspect, the merged black hole’s mass would now sit at around 150 solar masses, which would be the largest ever recorded.

 

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Have you ever been to Guizhou? .. like me ...?

Here are some pics from the Five-hundred-metre Aperture Spherical Radio Telescope (FAST) in Guizhou ...

In a development that could finally shed light on dark matter, an international team of scientists have detected neutral hydrogen atoms, from a galaxy other than our own, for the very first time.

Jul 4, 2020 14:15  

 

 

In a development that could finally shed light on dark matter, an international team of scientists have detected neutral hydrogen atoms, from a galaxy other than our own, for the very first time.

The finding came thanks to the enormous Five-hundred-meter Aperture Spherical Radio Telescope (FAST), which sits in a hilly, green natural basin in southwest China’s Guizhou Province.

The researchers detected the hydrogen coming from three extragalactic galaxies with only five minutes of exposure, a feat that demonstrates the exceptional sensitivity of the telescope. It is the first time neutral hydrogen from outside the Milky Way has been detected.

“With measurements of neutral hydrogen and carbon monoxide, scientists can estimate the dynamical mass of galaxies at different radii, and they can further study the distributions of baryons [a type of subatomic particle] and dark matter,” explained Dr Cheng Cheng, first author of the research.

Dark matter is a form of matter that’s believed to account for 85 percent of the matter in the universe but it has yet to be detected directly, despite the best efforts of researchers. Finding it would finally solve one of science’s most head-scratching mysteries.

The breakthrough FAST observation indicates the contribution of dark matter and illustrates the potential to study the mysterious matter in galaxies through neutral hydrogen.

Detecting extragalactic neutral hydrogen is one of the enormous telescope’s chief goals and it’s made possible through the massive size of the single-dish. As well as being the world’s largest filled-aperture radio telescope, it is the second-largest single-dish telescope after Russia’s RATAN-600.

The 1.2-billion-yuan ($170 million) machine, nicknamed Tianyan (meaning ‘Eye of Heaven’), is made up of approximately 4,400 aluminium panels and has more than 2,000 winches which allow it to be pointed at different parts of the sky.

Dr Cheng said the team is applying for more FAST observation time to further study the neutral hydrogen properties.

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This question has become racist since it was asked. Since that time, everything has become racist though.

icnif77:

I also resist to rasist ... 

 

I know, I have non-native (pajee) English accent.

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A: Going to HK would be the best bet I reckon, especially if you were loo
A:Going to HK would be the best bet I reckon, especially if you were looking for a church wedding. Chinese weddings are pretty grim IMO - you go to a barren govt dept with souless officials and navigate red tape so some guy can give you a red stamp and a marriage book. You get expensive pictures taken of you both posing in places you'd never go to in everyday life that is somehow supposed to represent your wedding, then a while later it's off to a restaurant where a game show host kind of guy makes sure it's as tacky as possible while the guests eat as fast as they can so they can leave as soon as they finish eating and gave you money. Hell, I'd go to Thailand or the Philippines and get married in Paradise.   -- Stiggs