知识世界

Astronomy:The Cosmos January to March

The mid-latitudes of the northern hemisphere. From January to March， our viewpoint for the nightsky. It's mid-evening， we are looking north. We approach the crossroads of the northern sky — the seven stars of the Plough of Big Dipper. The pattern is part of the big formation —the constellation of Ursa Major， the Great Bear.

• 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