Re:Planet X never dies (Score 1)

There have always been different stories for Planet 'X', most of then disappeared when the Kuiper Belt started to be discovered. There was a story with Pioneer 10 earlier this year which had it suffering orbital peturbations from KB objects.

If it does exists, it's too far away for a probe with current technology.

I suppose they will call it Prosperine (Pluto's wife) as that appears to be widely used in SF for a tenth planet.