MICHAEL E.BROWN /ASTRONOMER

             MICHAEL E. BROWN / ASTRONOMER   

 Since his childhood, Michael E. Brown (b. I965) has kept his sights on the solar system's edges. In 2005 he and two colleagues discovered in the Kuiper belt an object of  ficially classified as 2003 UB313, the largest discovered in 150 years. Brown nicknamed it Xena, for the pop culture superhero, although.
                His discovery outer object of- it was eventually renamed Eris. was a catalyst for the great debate about the planets in our on was named Dysnomia, after the goddess solar system. Accordingly, of lawlessness and the daughter  of Enis in Greek mythology. Although Brown, a professor at the California Institute  Technology, has dozens more discoveries to his credit, he will go down in history as the man responsible for Pluto's demotion.