Astronomers Consider Enlarging the Solar System

By: Associated Press
By: Associated Press

An international group of astronomers may be planning to add three planets to the solar system.

No, it's not science fiction. It's a draft resolution set to be presented to the International Astronomers meeting Wednesday in Prague.

On the agenda is a universal definition of a planet.

If the resolution is passed next week, Pluto's largest moon and two other heavenly bodies would join the nine existing planets.

One, the asteroid Ceres, had been considered a planet in the 1800s, but was demoted. Some astronomers have suggested Pluto should be demoted as well.

But the current proposal would end that debate, by defining a planet as any round object that orbits the sun and meets a certain size.

The astronomers will hold two brainstorming sessions before voting on a resolution.

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