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Home / Science / It is the farthest object of the solar system. Astronomers called it Farout.

It is the farthest object of the solar system. Astronomers called it Farout.



Astronomers have discovered a distant world orbiting the sun.

How far out? It has come out so far that the explorers nicknamed "Farout". All they can see is a pink spot in the night sky, but that's enough to conclude that they're looking at a 300-mile ice ball orbiting more than 11 billion orbits miles from the sun – more than three times that distance like Pluto and the farthest object ever seen in the solar system.

I t This is the latest revelation in a remote region that was expected to be empty. The study of their trajectory can help point to an unseen ninth planetary cycle the sun far beyond Neptune.

On Monday, the International Astronomical Union's Minor Planet Center announced the discovery and named it 2018 VG 18.

"Last month, we found it to be very, very slow," said Scott S Sheppard of the Carnegie Institution for Science, one of the discoverers of VG18. "We knew immediately that it was an interesting object."

[ Log in to receive reminders for space and astronomy events on your calendar .] [19659002] The gravity of the sun decreases with distance. Distant worlds move slowly and need an orbit longer than the closer. A dull, faint light spot appeared on November 10 with the 8-meter telescope of the Japanese Subaru on Mauna Kea in Hawaii. Follow-up observations at the Las Campanas Observatory in Chile this month confirmed the discovery.

Planetary scientists often use the distance from the sun to the earth – defined as an astronomical unit or 93 million miles – as a measure of the solar system's measurement. Neptune is 30 astronomical units or 2.8 billion miles away, and Pluto, currently on the outer orbit of its orbit, is 34.5 astronomical units or 3.2 billion miles from the Sun.

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Farout was observed by the Subaru Telescope, at Mauna Kea Observatory in Hawaii, on November 10th. In the hour between shots, the object moved relative to the background stars and galaxies. Credit Scott S. Sheppard and David Tholen / Carnegie Institution for Science

Pluto was once considered to be the outer rim of the solar system. Beginning in 1992, astronomers discovered a host of other icy worlds beyond Neptune, a region now known as the Kuiper Belt. The Kuiper belt ends at a distance of about 50 astronomical units, and the space beyond was considered largely empty.

But now astronomers are discovering objects like VG18 in this region, and they still know exactly how to explain it all.

VG18 is 120 to 130 astronomical units from the Sun. It is the first solar system object discovered in more than 100 astronomical units. (It is known that other objects have orbits that oscillate much more than 100 astronomical units, but are now closer.)


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