How Was Pluto Discovered Why Did It Take So Long To Find It Quizlet?
How Was Pluto Discovered Why Did It Take So Long To Find It Quizlet? Why did it take so long to find it? Pluto was discovered by Clyde Tombaugh at Lowell Observatory, from comparisons of photographs that showed the relative motion of pluto. Pluto was difficult to find because of its small size and great