知识世界

Astronomy:Radar: Vision from Space

Radar pervades our lives. It gives us weather maps， and safely guides ships in the sea and planes in the sky. It's a technology that makes visible what our eyes can't detect. One result is that today we are using radar to gain an entirely new perspective on planet earth， as well as the rest of the solar system.

• 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