CNN.com – Pluto gets the boot – Aug 24, 2006
Leading astronomers declared Thursday that Pluto is no longer a planet under historic new guidelines that downsize the solar system from nine planets to eight.
We’re gonna need some new anagrams.
There are a number of interesting things in the article, but one in particular that caught my eye was this:
Much-maligned Pluto doesn’t make the grade under the new rules for a planet: “a celestial body that is in orbit around the sun, has sufficient mass for its self-gravity to overcome rigid body forces so that it assumes a … nearly round shape, and has cleared the neighborhood around its orbit.”
Pluto is automatically disqualified because its oblong orbit overlaps with Neptune’s.
Wouldn’t this also disqualify Neptune? The article is unclear.