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Astronomers perplexed by “Odd Radio Circles,” a freshly found out, quite exceptional room phenomenon – haveeruonline

Astronomers believe that they have learned a new, weird variety of cosmic item that is invisible to all wavelengths of light-weight except radio.  The

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Astronomers believe that they have learned a new, weird variety of cosmic item that is invisible to all wavelengths of light-weight except radio. 
The peculiar circular objects in query have been unofficially dubbed “Odd Radio Circles” (ORCs) 3 of them had been found in a modern facts amassed for the duration of a preliminary survey by the Australian Sq. Kilometre Array Pathfinder, a radio telescope array in Western Australia. A fourth Odd Radio Circle was found out when scientists sifted via previous information from 2013.
The new phenomenon is the concentrate of a new paper revealed on the preprint web page arXiv, which was submitted to Nature Astronomy by a team of intercontinental astronomers. It is but to be peer-reviewed.
“Below we report the discovery of a course of round aspect in radio photos that do not look to correspond to any of these known kinds of object or artefact, but somewhat surface to be a new course of astronomical object,” the authors of the paper compose.
The ORCs are mostly circular in shape, with the exception of one particular formed like a disc, and they are unable to be observed with infrared, optical, or X-ray telescopes. 3 of them are brighter all around the edges. 
The circular character of the ORCs has led to some curiosity above their correct nature. “Round features are perfectly-recognised in radio astronomical photos, and usually represent a spherical object this sort of as a supernova remnant, a planetary nebula, a circumstellar shell, or a facial area-on disc this sort of as a protoplanetary disc or a star-forming galaxy,” the researchers produce. 
Astronomers in the beginning considered the ORCs may perhaps have been a telescope glitch which is why the discovery of the fourth ORC, from data that was collected in 2013 by the Large MetreWave Radio Telescope in India, was key to the acquiring. That observation dominated out the risk that the phenomenon was merely an artifact of the precise Australian radiotelescope array.
So what could these odd, circular radio objects be? In the paper, the researchers recommend a listing of eventualities. Very first, they rule out that ORCs could be remnants of a supernova, generally mainly because of how scarce ORCs are. Galactic planetary nebulas are dominated out, far too, for the similar 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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