They used a telescope at Mount Palomar Observatory(4) near Pasadena.
They used a telescope at Mount Palomar Observatory(4) near Pasadena.
他们在靠近帕萨迪纳的帕洛慕山天文台使用了一台望远镜。
They used a telescope at Mount Palomar Observatory(4) near Pasadena.
他们在靠近帕萨迪纳的帕洛慕山天文台使用了一台望远镜。