Scientists have discovered another bizarre, gigantic and unexplained circle-shaped radio structure in outer space, a discovery that contributes to “exciting times in astronomy,” according to a new study.
The bubble is the latest example of the Strange Radio Circle (DRC), a name for a type of spectral ring that debuted in a 2020 paper led by University of Western Sydney astrophysicist Ray Norris. Norris and his colleagues discovered four such huge circles, eerily glowing in faint radio waves far beyond our galaxy.
Now scientists led by Berbel Koribalski, a researcher at Australia’s CSIRO National Telescope Center, have discovered a fifth ORC, which appears to extend to about a million light years away.
The structure, called ORC J0102-2450, also looks like it has an elliptical galaxy at its center, a feature it shares with the two ORCs detected by Norris’ group. Koribalski and co-authors, including Norris, said the presence of the galaxies is “hardly a coincidence” and could help explain the origin of these ghost rings, according to their forthcoming study in Monthly Notices of the Royal Astronomical Society Letters, available on the arXiv preprints server.
For decades, ORCs have gone undetected because they are very dim, but new and modern radio telescopes such as Australia’s Square Kilometre Array Pathfinder (ASKAP) are sensitive enough to spot the huge bubbles.
“Because ASKAP can observe an area of 30 square degrees — a very large area — it is an excellent survey instrument, and the data collected will lead to many new discoveries,” Koribalski said in an e-mail. “We usually observe one area of 30 square degrees for ~10 hours (if possible), then repeat these observations several times to increase the sensitivity of the field. The higher the sensitivity, the more radio sources we detect.”
Koribalski and her colleagues combined eight ASKAP observations from August 2019 to December 2020 to see the newest member of the ORC family.
Because ORCs are so faint, it is difficult to determine exactly how far away they are from Earth, making it difficult to estimate their size. However, the pattern of galaxies appearing at the center of the ORC, now observed in three of five cases, may provide a measure of distance. For example, the galaxy at the center of the recently discovered ORC is about three billion light-years away, suggesting that the circle spans a space of about 980,000 light-years.
This distant galaxy could also be the source of a giant bubble, the study says. Some galaxies are surrounded by long radio-bright lobes formed by jets from their galactic nuclei that eject energetic gas tens of thousands of light-years into intergalactic space. Koribalski and her colleagues suggest that ORC J0102-2450 may be one of these petals when viewed from Earth, as it dims rapidly after the jets turn off.
The team also suggests that a “giant blast wave in the central galaxy” that creates a “spherical shell of radio emission” could be the ORC’s progenitor, the study says. One possible trigger for such a large-scale spherical shock wave could be the merger of two supermassive black holes during a galactic collision.
‘October Surprise’: Russia To Launch Nukes in Space
The ‘national security threat’ announced on Wednesday is
about Russia planning to launch nuclear weapons in space, causing some
to speculate whether it’s really an election year ploy.
The panic began when House Intelligence Committee Chair Mike Turner
(R-Ohio) asked President Biden to declassify information about a
“serious national security threat”.
Modernity.news reports: The weapon would reportedly be designed to be used to take out satellites.
Speaker Mike Johnson (R-La.) responded by telling reporters he wanted “to assure the American people, there is no need for public alarm.”
The big, scary threat is serious business and involves a space-based nuke controlled by evil dictator Putin, but it’s also “not an immediate crisis,” according to what three members of the U.S. House Intelligence Committee have told Politico.
Okay, then. Just for election season, is it?
Zero Hedge reports: “So, the question is – was this:
a) a distraction from Biden’s broken brain, or
2) a last desperate attempt to get more funding for anything-but-the-US-border, or
iii) a path to pitching Putin as the uber-bad-guy again after his interview with Tucker Carlson.”
Just by coincidence, Mike Turner recently returned from Ukraine having lobbied for billions more in weapons and aid for Zelensky’s government.
Some questioned the timing, suggesting it might all be a deep state plot to keep American voters afraid when they hit the ballot box.
Speculation will now rage as to whether this is “the event,” real or imagined, that billionaires and elitists the world over have been building underground survival bunkers in preparation for.
Earth has built-in protection from asteroids
Asteroids are not just wandering space rocks, but a potential threat
to Earth. But what if the Earth already has its own built-in defenses
against them? Recent research published on the preprint server arXiv puts forward an unusual theory: Earth’s gravitational forces may serve as its secret shield against asteroids.
planet uses powerful gravitational interactions with other celestial
bodies to break apart asteroids that approach it. These tidal forces,
akin to those that explain Earth’s tides caused by the Moon, can be so
intense that objects undergo tidal disruption, causing them to be torn
Observations of fragments of Comet Shoemaker-Levy 9 after
its collision with Jupiter in 1994 provided the first confirmation of
this phenomenon. However, for decades astronomers have been looking for
evidence that Earth or other terrestrial planets could have a similar
effect on asteroids and comets.
Planetary scientist Mikael Granvik
from the Swedish University of Technology, Luleå, led the research that
came closer to solving the above phenomenon.
discovery is linked to the search for gravitationally disrupted
near-Earth asteroids (NEAS), and provides compelling evidence that our
planet’s gravitational forces are not just an abstract concept, but a
factor capable of breaking asteroids into small pieces.
modeling of asteroid trajectories, Grunwick and colleague Kevin Walsh of
the Southwest Research Institute found that collisions with rocky
planets can cause asteroids to lose a significant portion of their mass,
turning them into debris streams.
New data shows that small
asteroid fragments, while not posing a threat to life on the planet, may
nevertheless increase the likelihood of local collisions like those
that occurred in Tunguska and Chelyabinsk.
Granwick assures that
asteroids smaller than 1 km in diameter are not a critical threat, but
increase the likelihood of incidents. However, it is worth remembering
the additional risks that may arise due to the formation of new debris
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