If the tenth planet is popularized, perhaps people will try to push objects like 2003EL61 and 2005FY9 that are three-fourths of Pluto’s size into the class of “planet.” What would it do to our sense ...

If the back-and-forth had been limited to, say, the Pluto-like body 2005FY9, perhaps few outside of academia would care. But onlookers say Pluto’s demise has revealed a large reservoir of ...

In related research, Brown’s team has also found that the other two newly discovered large objects in the Kuiper Belt – 2003 UB313 and 2005FY9 – are covered in frozen methane. Methane ...