知识世界

Astronomy:Spacefiles — Galaxy

Supernovae are the lifeblood of our Galaxy. Their debris and shockwaves help create stars like the sun. Their chemical elements are in every planet and every one of us. Our Galaxy， the Milky Way — just one among the 50 billion galaxies — is believed to comprise the universe.

• 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