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jan 9, 2006 - Pluto demoted to dwarf planet

Description:

The International Astronomical Union downgraded the status of Pluto to that of "dwarf planet". This means that from now on only the rocky worlds of the inner solar system and the gas giants of the outer system will be designated as planets.

Added to timeline:

3 months ago
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New timeline
Astronomy

Date:

jan 9, 2006
Now
~ 13 years ago
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