 Also shown are the distances where Π = 1 and Λ = 1 (where the body would change from being a planet to being a dwarf planet).Stern, currently leading NASA's "New Horizons" mission, disagrees with the reclassification of Pluto on the basis of its inability to clear a neighbourhood.One of his arguments is that the IAU's wording is vague, and that—like Pluto—Earth, Mars, Jupiter and Neptune have not cleared their orbital neighbourhoods either.