Type:

Other

Description:

Until the middle of the 20th century, the Earth's magnetism seemed to be a happy accident of nature. Too many factors had to fit just right, the fluid core of the Earth, its electrical conductivity and its motions, all had to satisfy the strict requirements of dynamo theory. That was before other planets in the solar system were visited and examined. Now we know that among those planets, only Venus lacks any magnetism. The planets differ greatly in size and properties, and their fields differ, too. Yet they all seem to have dynamo fields, or (in the case of Mars and the Moon) have had them in the past. This site reviews the discovery of the magnetism of other planets and discusses their eccentricities.

Subjects:

  • Science > General

Education Levels:

  • Grade 1
  • Grade 2
  • Grade 3
  • Grade 4
  • Grade 5
  • Grade 6
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  • Grade 9
  • Grade 10

Keywords:

Space Science,Astronomy,NSDL,Chemistry,oai:nsdl.org:2200/20061003230929002T,Science,Undergraduate (Lower Division),NSDL_SetSpec_dlese.org,Physics,Higher Education,High School,Technology,Space science,Physical sciences,History/Policy/Law,History of science,Space sciences,Geoscience,Graduate/Professional,Earth science

Language:

English

Access Privileges:

Public - Available to anyone

License Deed:

Creative Commons Attribution Non-Commercial Share Alike

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