Rings are a special, dazzling rarity in our solar system. Now astronomers have discovered a very distant world — Beyond Pluto trajectory — Surrounded by an unusual ring.
Scientists believe that frigid dwarf planets(opens in new tab) A round body that doesn’t quite meet all the definitions of a planet, quaor has a ring system that can withstand impressive distances from quaor. The detection was unexpected because researchers did not believe the rings could survive relatively far from the object they orbit. (This distance is explained in more detail below.)
Astronomers still wonder how such rings form and persist.
One of the study’s authors, Vic Dillon, a scientist in the Department of Physics at the University of Sheffield, said: “Everyone learns about Saturn’s magnificent rings as a child, so this new discovery will help us understand how they are. We hope to provide further insight into how it was formed.” Astronomy, said in a statement.Researchers have published their research(opens in new tab) in the journal Nature February 8th.
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No, we don’t have a clear image of Kua Oa and its (possibly illustrious) ring.These relatively small objects are just dots in even the most powerful telescopes(opens in new tab)Kua Oa is about 4 billion miles away, about 690 miles across, half the size of Pluto, and is also a dwarf planet.
But clever astronomers have tracked down the ring. They used the world’s largest optical telescope (a telescope that sees visible light), the 34-foot-wide Gran Telescopio Canarias. A special camera (HiPERCAM) in the Canary Islands off the coast of Spain(opens in new tab)) to a huge instrument. As Kua-or passed through space, the cameras were sensitive enough to detect dwarf planets that would block light as they passed in front of distant stars. I saw two “light dips”, before and after. This “indicates a ring system around Quaoa,” explains a University of Sheffield press release.
The location of the ring system of the dwarf planet Quaoa, well beyond its “Roche limit”.
Credit: Paris Observatory
Astronomers can count with just two hands the number of known rings in the solar system, including Jupiter, Uranus, Neptune, the famous Saturn, and two smaller bodies called Chariklo and Haumea. And now, quaor.
However, unlike Quaoar, these rings are fairly close to their parent object. At such close range, strong forces from nearby objects prevent the rings from merging to form the moon. Until now, scientists thought that the rings could not be more than three times his “planetary radius” away from the object or planet they are orbiting. For example, Saturn’s brilliant rings lie within this distance, known as the “Roche Limit.” However, Quaoar’s rings are very rare. These rings are twice as far away as Saturn’s her and more than seven planetary radii away.
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“It is unexpected to discover this new ring system in our solar system, and it is doubly unexpected to find a ring so far from Kua Oa, and how such rings form. It challenged previous notions of ,” said astronomer Dillon.
Certainly, the unexpected is expected in a diverse solar system. After all, our cosmic neighborhood is full of surprises.
This article was originally published on February 8 and has been updated with more information about the ring Kua Oa..
