The Astronomy Center has provided educational resources to introductory astronomy educators since 2003. Over the past 20 years, the rapid pace of discovery has rendered some of our linked resources obsolete. Thus, the Astronomy Center will be decommissioned on March 1, 2022. Our highest quality resources will be retained on ComPADRE.org.

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Results #1-#10 of 13
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Copernican System Model  [ Computer Program ]
  
Match Score:
100
Byline:
T. Timberlake
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The Ejs Copernican System model illustrates Copernicus' system of planetary motions. The entire system is centered on the center of Earth's uniform, circular orbit. Sun is placed…
Superior Ptolemaic Model  [ Computer Program ]
  
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100
Byline:
T. Timberlake
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The Ejs Superior Ptolemaic model illustrates Ptolemy's orbit for a superior planet. The model consists of a deferent circle, centered on a point some distance from Earth (at the…
Inferior Ptolemaic Model  [ Computer Program ]
  
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100
Byline:
T. Timberlake
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The Ejs Inferior Ptolemaic model illustrates Ptolemy's orbit for a inferior planet. The model consists of a deferent circle, centered on a point some distance from Earth (at the…
Phases of Venus Model  [ Computer Program ]
  
Match Score:
100
Byline:
T. Timberlake
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The EJS Venus Phases model illustrates the phases of Venus as predicted by either the Copernican system of the Ptolemaic system (the Copernican system is the default). One window…
  
Match Score:
100
Byline:
J. Schombert
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This lecture is about the Earth, the planet which we know the most about, due to our ability to explore its interior as well as exterior. The lecture will compare values and…
  
Match Score:
100
Byline:
D. Stern
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This web site provides an outline regarding magnetospheres in the solar system, and the interaction with energetic particles from a number of sources. Links are given to more…
  
Match Score:
100
Byline:
D. Stern
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This set of five web pages provides a non-mathematical introduction to the motion of charged particles in magnetic fields. These pages describe the "guiding center motion" which…
  
Match Score:
100
Byline:
D. Stern
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This website provides instructions and an image which can be downloaded, printed on a regular page, copied by a xerox machine (preferably, onto stiff paper), cut and folded to…
  
Match Score:
100
Byline:
D. Stern
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The round shape of the Earth may be inferred from the existence of a horizon at sea. Ancient Greeks deduced it from the shape of the Earth's shadow when the Moon is eclipsed and from…
  
Match Score:
100
Byline:
D. Stern
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This web page provides an examination of Earth's magnetosphere and physical phenomena related to it. Subject matter includes the motion of charges in the Earth's magnetic field and…
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Results #1-#10 of 13