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As of 2006, there are three criteria a celestial body has to meet to be considered a planet. Pluto meets two of them. So what was the real reason Pluto got demoted? And will the planet ever get redemption?
Pluto Could Be Made A Planet Again, Along With 102 Other Celestial Bodies
Behind the Push to Get Pluto Its Planetary Groove Back
Pluto's loss of planetary status in 2006 remains controversial. Now a new definition is being proposed that would restore Pluto while increasing the number of "planets" in our solar system to over 110.
Do You Know What Color Pluto Really Is?
When New Horizons flew past Pluto, astronomers were shocked to discover that Pluto is actually red. Where is this redness coming from?
The Man Who Killed Pluto: Q & A with Astronomer Mike Brown
"Here's a thought experiment. Imagine that Pluto doesn't exist. Then in 2005 I discover Eris, which is essentially the same size as Pluto. Not a single person on Earth, I suspect, would suddenly jump up and say, "You just discovered a planet.'"
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