US News: Saturn is the solar system's 'moon king,' with 20 more spotted - - PressFrom - United Kingdom
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US News Saturn is the solar system's 'moon king,' with 20 more spotted

14:10  10 october  2019
14:10  10 october  2019 Source:   reuters.com

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By Will Dunham WASHINGTON (Reuters) – Saturn is now being recognised as the “ moon king ” of our solar system , with astronomers spotting 20 more of.

Saturn is now being recognized as the " moon king " of our solar system , with astronomers spotting 20 more of them “ Saturn is the moon king ,” Sheppard said on Wednesday in an email interview. The discovery was announced this week by the International Astronomical Union’ s Minor Planet Center.

Saturn © Getty Saturn

Saturn is now being recognised as the "moon king" of our solar system, with astronomers spotting 20 more of them orbiting the giant ringed planet, bringing its total count to 82 - three more than Jupiter.

The newly identified small moons, ranging from about 2 to 4 miles (3 to 6 km) in diameter, were detected using the Subaru telescope in Hawaii by a research team led by astronomer Scott Sheppard of the Carnegie Institution for Science in Washington.

"Saturn is the moon king," Sheppard said on Wednesday in an email interview.

The discovery was announced this week by the International Astronomical Union's Minor Planet Centre.

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Scientists have spotted 20 small moons orbiting Saturn Saturn has overtaken Jupiter as the solar system ' s planet with the most moons after scientists discovered 20 more orbiting the ringed-planet. "It was fun to find that Saturn is the true moon king ," said Sheppard. The Carnegie Institution for

Saturn is now the solar system ' s moon king . Astronomers Monday announced the discovery of 20 new moons in orbit around Saturn , giving the The other three moons orbit in the same direction as Saturn rotates. Sheppard and his team used a telescope in Hawaii to spot Saturn ’ s 20 new moons

One of the moons orbits at an astounding distance of about 15 million miles (24 million km) from Saturn, farther away than any of its other moons. By comparison, Earth's moon orbits about 240,000 miles (386,000 km) from the planet.

Gallery: Discovery of 20 new moons gives Saturn a solar system record (National Geographic)

a white and black plate: In this photograph taken in the Cassini spacecraft's 12th year orbiting Saturn, the ring shadows appear to obscure almost the entire southern hemisphere, while the planet's north pole and its six-sided jet stream, known as

Seventeen of the newly detected Saturnian moons are orbiting in the opposite direction of the planet's rotation. The other three orbit in the same direction Saturn spins, as is typically the case.

A number of the moons appear to be fragments of once-larger moons that broke up in long-ago collisions with other moons or passing comets or asteroids, Sheppard said. That is similar to some of the 79 moons orbiting Jupiter.

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The solar system has a new winner in the moon department. Twenty new moons have been "It was fun to find that Saturn is the true moon king ," said astronomer Scott Sheppard of the Carnegie Sheppard and his team used a telescope in Hawaii to spot Saturn ' s 20 new moons over the summer.

Twenty -four of Saturn ' s moons are regular satellites; they have prograde orbits not greatly inclined Saturn ' s satellite system is very lopsided: one moon , Titan, comprises more than 96% of the mass Titan, at 5,149 km diameter, is the second largest moon in the Solar System and Saturn ' s largest

Saturn, a gas giant made up mostly of hydrogen and helium, is the second-largest planet in the solar system and the sixth from the sun. Its diameter of about 72,000 miles (116,000 km) dwarf's Earth diameter of about 7,900 miles (12,700 km).

Only Jupiter, the fifth planet from the sun, is larger. Saturn formed with the other planets and the sun about 4.5 billion years ago.

"These new moons show us the solar system was a very chaotic place in the distant past, with objects flying all over the place. These are the last remnants of the objects that formed in the giant planet region, as all of the other objects that formed in this region have either been ejected or incorporated into the planets themselves," Sheppard said.

The newly identified moons are much smaller than Saturn's largest, the icy world Titan, whose diameter of about 3,200 miles (5,150 km) exceeds that of the innermost planet, Mercury.

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A gas giant that ' s the second-largest planet in our solar system , Saturn now has more known moons than any other planet. Jupiter, the largest planet and the previous record holder, has 79 known moons . “It was fun to find that Saturn is the true moon king for our solar system ,” Scott Sheppard, a faculty

Jupiter may be the solar system ’ s king , but Saturn has a bigger entourage: Today, astronomers announced that they have discovered 20 more moons around Saturn , bringing its total number to 82—the most for any planet in the solar system . The massive haul comes just over a year after

"We believe Saturn likely has about 100 moons larger than one mile (1.6 km), but the discovery of these new moons that are about two to four miles in size is pushing the limit of our current ability to find them. We will need the next generation of large telescopes to find smaller moons," Sheppard added.

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