Built in 1894, it is one of the oldest observatories in the US and has led to many important discoveries. In 1930, Clyde Tombaugh identified the solar body Pluto (originally thought to be a planet). 자세히 보기
Built in 1894, it is one of the oldest observatories in the US and has led to many important discoveries. In 1930, Clyde Tombaugh identified the solar body Pluto (originally thought to be a planet). 자세히 보기
