知识世界

Astronomy:Spacefiles — King Planet

Jupiter has at least sixty moons — many are mere chunks of rock. With three rings of dust as tenuous as gossamer， Jupiter is more than five times farther from the sun than is Earth. It is the biggest planet. Earth would fit twelve times across a diameter of almost 143，000 kilometres.

• 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