知识世界

Astronomy:Spacefiles — Pluto

Dark， diminutive and cold， is the farthest planet from the sun. The frontier world of Pluto is so obscure， and it wasn't spotted until 1930， or its moon Charon until 1978.

• 01

  Astronomy： Threat from Space

  
• 02

  Astronomy： Galileo and the Milky Way

  
• 03

  Astronomy： Spacefiles — Lord of the Rings

  
• 04

  Astronomy： Spacefiles — Venus

  
• 05

  Astronomy： Spacefiles — Sun

  
• 06

  Astronomy： The Story of Aviation

  
• 07

  Astronomy： Spacefiles — Galaxy

  
• 08

  Astronomy： History of the Race to the Moon

  
• 09

  Astronomy： Deep Impact

  
• 10

  Astronomy： Edwin Powell Hubble and the Expanding Universe