Hi! This is Mooquackwooftweetmeow, a collection of stuff by Greg K Nicholson.
They finally found it - again - another tenth planet, this time unnamed but temporarily designated 2003 UB313. It was also announced yesterday that 2003 EL61 may be roughly 70% Pluto's size.
Well, they finally found it, Planet X, a.k.a. Sedna. Of course, if it is decided that it is actually a planet, the name will have to be changed to a Roman god. Sedna is the Inuit goddess of the ocean, and the Roman god of the ocean - Neptune - is already taken.
Officially, Pluto is a planet. In reality, it's a member of numerous Kuiper Belt objects which orbit the Sun beyond Neptune. When it was found, 74 years ago, Clyde Tombaugh was searching for a planet and so assumed what he had found was one.
Questions? Comments? Plaudits? Microblog at identi.ca/gregknicholson, or with the tag #pluto; or email me at greg@gkn.me.uk.