A new planet has been discovered in our solar system, apparently the largest object to be found since Neptune in 1846. Affectionately known as 2003UB313, the new planet is at least as large as Pluto, but three times as far away. It occupies an orbit which is inclined at 44 degrees to the ecliptic (the plane of the earth’s orbit), one reason why it has not been discovered before.
Calling it a new planet is a misnomer, of course. There’s nothing new about it. It has been sitting out there waiting all this time.