Astronomers are constantly finding new planets orbiting stars other than our sun. In 2005 astronomers discovered a new object, later named Eris, which almost become the tenth planet. The discussion of this object resulted in a new definition of a planet which excluded Eris.
nol
No. Most follow the new IAU definition of a planet which excludes Pluto.
No. It was categorised as a dwarf planet in 2006, but not all astronomers agree with that decision.
The dwarf planet Pluto is believed by astronomers might be the core of a much larger planet
Astronomers have newly discovered a planet , Gliese 581g, within the "Goldilocks" zone - see related link to the news article .
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Since the beginning of astronomy. Astronomers are ALWAYS looking for new things.
well back of Pluto there is a planet but they are still learning about it.
Astronomers have decided that Pluto does not meet the definition of a planet.
Dr. nuts
No. Most follow the new IAU definition of a planet which excludes Pluto.
Astronomers think Pluto is a dwarf planet. And they're right.
No. It was categorised as a dwarf planet in 2006, but not all astronomers agree with that decision.
Mars
pluto
The dwarf planet Pluto is believed by astronomers might be the core of a much larger planet
Astronomers have newly discovered a planet , Gliese 581g, within the "Goldilocks" zone - see related link to the news article .