If there were ever sentient beings in the Ophiuchus cluster, a faraway conglomeration of galaxies in the southern sky, they are long gone. A few hundred million years ago, a mighty cosmic storm swept through that region of space. Hot gas suffuses the cluster, but the storm blew a crater through it more than a million light-years wide, leaving just a near-vacuum, a nattering haze of ultrahot electrical particles.
The culprit, astronomers suspect, was a gigantic outburst of energy from a supermassive black hole — the biggest explosion ever documented in the universe, according to Simona Giacintucci, a radio astronomer at the Naval Research Laboratory and the leader of the research team.
Not to change the topic here:
Coronavirus, Mick Mulvaney, Black Hole: Your Weekend Briefing - The New York Times
1. Our reporters reconstructed the Trump administration's response to the coronavirus , finding "a raging internal debate about how far to go in telling Americans the truth."
2. Erik Prince, the security contractor close to the Trump administration, worked to recruit former American and British spies for secretive, politically motivated intelligence-gathering operations. Above, Mr. Prince arriving at a gala for young Republicans in New York last year.
Black hole from the early universe is blasting us with a powerful jet | New Scientist
A distant supermassive black hole has been spotted firing an extraordinarily powerful beam of radiation and matter at us. This object, called a blazar, could help us figure out how the universe has changed in the last 13 billion years.
Alberto Moretti at Italy's National Institute for Astrophysics and his colleagues found this incredibly bright blazar by comparing data from several different sky surveys, and then measured its characteristics using the Large Binocular Telescope Observatory in Arizona and the Swift space telescope. …
Scientists say supermassive black hole once belched a crater into a nearby galaxy
We've seen what happens when stars go supernova and suns explode but scientists believe the biggest explosion in the history of our known universe was the result of a black hole with indigestion.
A team of researchers working out of the Naval Research Laboratory in Washington DC recently conducted a detailed study of one our galaxy's nearby neighbors, a galactic conglomerate called the Ophiuchus cluster.
What's interesting about this particular cluster is that it has a donut-shaped "crater" in it. When scientists discovered the anomaly in 2016 they initially theorized that the crater could be the result of a projection from a black hole. By this logic, the black hole would have belched out hot gasses that disrupted the center of the cluster, thus causing the crater.
This may worth something:
UK universities face cash black hole amid coronavirus crisis | Education | The Guardian
British universities face a black hole of hundreds of millions of pounds in tuition fees from the impact of coronavirus as international students from China and other severely affected countries are forced to cancel or postpone enrolments.
Sources told the Guardian that most universities are planning for new students from China to delay entry until January next year, with online teaching offered. Exams, including English language tests required for visas and university admissions, have been cancelled in China, where 80,000 people have caught coronavirus.
Surprise! Students get an unexpected glimpse of a black hole 30,000 light-years away | Space
Peering into deep space with an instrument they built, a group of students and researchers caught a surprising glimpse of a newly discovered black hole 30,000 light-years from Earth.
In the fall of 2019, students and researchers from the Massachusetts Institute of Technology and Harvard University were working with an instrument that they designed and now operate, the Regolith X-Ray Imaging Spectrometer (REXIS), which is on board NASA's OSIRIS-REx spacecraft. While using the shoebox-size instrument to observe the asteroid Bennu, the spacecraft's destination, the team made an unexpected detection: a new black hole in the constellation Columba.
Immigration policy will mean care sector 'black hole', claims union | UK news | The Guardian
About 115,000 care workers are originally from an EU country and 237,000 workers were born outside the EU. Overall, almost a fifth of the care sector's workforce was born outside the UK. According to the Office for National Statistics, there are an estimated 110,000 vacancies in adult social care. The sector has a vacancy rate of 8%, compared with an average of 2.8% across all sectors.
Under immigration rules, due to come into force on 1 January 2021, most businesses will be barred from recruiting overseas workers for jobs that pay less than £25,600 a year. The average salary for care workers employed by private providers was £16,200 last year, according to Skills for Care, which collects data on behalf of local authorities and the government.
The Black Hole Engulfing the World's Bond Markets - The Washington Post
Typically, bonds are the safest assets on the market, so many investors seek them out at times of heightened market stress -- during a pandemic scare, for instance. A bond can have a modestly positive coupon when issued by a government, institution or company, but high demand by investors can push its price up -- and therefore its yield down. Some funds must buy the bonds regardless of their yield because they are duty-bound to track government bond indexes.
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While negative-yielding debt has retreated from its $17 trillion peak in August 2019, it's on the way back up as central banks around the world embark on more rate cuts. About 25% of global investment-grade debt is under water. That includes all of Germany's government bonds, which is why investors effectively pay the German government 0.7% for the privilege of buying its benchmark bonds. None of the U.S.
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