知识世界

Astronomy:Spacefiles — Orbit

Planet Earth is a global village. And we communicate with anyone anywhere on Earth. Chatter and data are a network linked from orbit. From satellite — dishes catch radio and TV — we watch images from across the world and from worlds beyond， like Mars， kids' cartoons and global news. Telelecommunication bathes the planet.

• 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