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New planet found on outer rim


digital7

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A new planet-like object has been found circling the Sun more than one and a half billion kilometres beyond Pluto.

We may discover Kuiper Belt objects bigger than Pluto

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Quaoar, as it has been dubbed, is about 1,280 kilometres across (800 miles) and is the biggest find in the Solar System since Pluto itself 72 years ago.

The object is about one-tenth the diameter of Earth and circles the Sun every 288 years.

It is half Pluto's size, but apparently larger than the ninth planet's moon, Charon.

"It's about the size of all the asteroids put together," Michael Brown of the California Institute of Technology in Pasadena, US, told BBC News Online. "So this thing is really quite big."

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The first Kuiper Belt object was discovered just a decade ago.

Researchers say that as larger Kuiper Belt objects turn up, the case for regarding Pluto as a fully fledged planet weakens.

Pluto lies within the Kuiper Belt and is considered by many to be merely among the largest of the bunch, and not a planet in its own right.

"It's pretty clear, if we discovered Pluto today, knowing what we know about other objects in the Kuiper Belt, we wouldn't even consider it a planet," said Brown.

Frank Summers, an astrophysicist at the Space Telescope Science Institute in Baltimore, added: "An observation like this just confirms that; that we may discover Kuiper Belt objects bigger than Pluto."

However, there are a great many astronomers who would oppose any notion that Pluto be demoted.

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Originally posted by digital7

A new planet-like object has been found circling the Sun more than one and a half billion kilometres beyond Pluto.

We may discover Kuiper Belt objects bigger than Pluto

_38311791_q150.jpg

Quaoar, as it has been dubbed, is about 1,280 kilometres across (800 miles) and is the biggest find in the Solar System since Pluto itself 72 years ago.

The object is about one-tenth the diameter of Earth and circles the Sun every 288 years.

It is half Pluto's size, but apparently larger than the ninth planet's moon, Charon.

"It's about the size of all the asteroids put together," Michael Brown of the California Institute of Technology in Pasadena, US, told BBC News Online. "So this thing is really quite big."

I believe that on certain nights I've been to Quaoar. :eek:

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