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Astronomers perplexed by “Odd Radio Circles,” a freshly discovered, quite unusual room phenomenon – Sprout Wired

Astronomers feel they have found out a new, weird form of cosmic item that is invisible to all wavelengths of…

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Astronomers feel they have found out a new, weird form of cosmic item that is invisible to all wavelengths of light except radio. 
The odd circular objects in query have been unofficially dubbed “Odd Radio Circles” (ORCs) three of them were uncovered in a new information gathered during a preliminary study by the Australian Sq. Kilometre Array Pathfinder, a radio telescope array in Western Australia. A fourth Odd Radio Circle was learned when researchers sifted by means of previous details from 2013.
The new phenomenon is the concentrate of a new paper posted on the preprint internet site arXiv, which was submitted to Nature Astronomy by a team of global astronomers. It is still to be peer-reviewed.
“Listed here we report the discovery of a class of round element in radio images that do not appear to correspond to any of these acknowledged types of object or artefact, but somewhat seem to be a new class of astronomical item,” the authors of the paper publish.
The ORCs are mostly circular in form, with the exception of 1 formed like a disc, and they can’t be witnessed with infrared, optical, or X-ray telescopes. A few of them are brighter close to the edges. 
The round mother nature of the ORCs has led to some curiosity around their genuine character. “Circular features are perfectly-recognised in radio astronomical illustrations or photos, and normally signify a spherical item this kind of as a supernova remnant, a planetary nebula, a circumstellar shell, or a deal with-on disc this kind of as a protoplanetary disc or a star-forming galaxy,” the scientists write. 
Astronomers initially thought the ORCs might have been a telescope glitch which is why the discovery of the fourth ORC, from data that was collected in 2013 by the Big MetreWave Radio Telescope in India, was important to the locating. That observation ruled out the chance that the phenomenon was just an artifact of the certain Australian radiotelescope array.
So what could these strange, circular radio objects be? In the paper, the researchers propose a list of scenarios. To start with, they rule out that ORCs could be remnants of a supernova, largely since of how uncommon ORCs are. Galactic planetary nebulas are ruled out, much too, for the exact same purpose. “[I]f the ORCs are

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NASA tweets beautiful pictures of Mars. They may make you gasp in wonder – Hindustan Times

With over 16,000 likes and more than 3,200 retweets, people didn’t hold back their amazement while sharing their comments on the post.

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Mars, the fourth planet from the sun, has always been a source of curiosity for people. For years, scientific explorations have helped people on Earth to know more about the Red Planet. The images of the planet never fail to fascinate people. Just like these ones tweeted by NASA which may make you gasp in wonder.
“Beautiful Mars! Our Mars Reconnaissance Orbiter launched 15 years ago today to study the Red Planet’s atmosphere, weather, subsurface water, and more. But the mission might best be kn…

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Coffee stains inspire new printing technique – Mirage News

Have you ever spilled your coffee on your desk? You may then have observed one of the most puzzling phenomena of fluid mechanics – the coffee-ring…

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Have you ever spilled your coffee on your desk? You may then have observed one of the most puzzling phenomena of fluid mechanics – the coffee-ring effect.
Coffee rings form because the liquid evaporates quicker at the edges, causing an accumulation of solid particles that results in the characteristic dark ring.
Inks behave like coffee – particles in the ink accumulate around the edges creating irregular shapes and uneven surfaces, especially when printing on hard surfaces like silicon wafers …

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Coronavirus-hit Melbourne supermarket alarmed by silence from contact tracers – ABC News

The owner of a Melbourne supermarket says she finds it “disturbing” she still has not heard from contact tracers a fortnight after one of her staff tested positive for COVID-19.

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When supermarket owner Tina Reddrop learned the partner of a staff member had COVID-19, she took no chances.
Key points:

  • A staff member at Supa IGA Werribee tested positive to COVID-19
  • Store owner Tina Reddrop is surprised she has still not heard from contact tracers two weeks later
  • No other staff at the store have tested positive

“We asked her to immediately get tested,” Ms Reddrop said.
“Members of staff who were in contact with her were also asked to self…

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