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Results #1-#10 of 100+
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Match Score:
100
Byline:
Publisher: BBC
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This article from the BBC describes some of the controversy in the theory that the mass extinction of the Cretaceous period was caused by a meteorite impact. The crater thought by…
  
Match Score:
100
Byline:
Publisher: NASA
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This article from the NASA Astrobiology Institute raises some issues in the accepted theory that the mass extinction event of the late Cretaceous was caused by a meteorite impact.…
  
Match Score:
100
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Publisher: Discover
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This article from Discover magazine overviews twenty ways the planet could experience mass extinction or worse. Examples include asteroid impact, alien invasion, and gamma-ray bursts.
Slash-Dot System Model  [ Computer Program ]
  
Match Score:
100
Byline:
J. Pav
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The Slash-Dot Model simulates a massive line segment and massive point rotating about one another due to gravity in a 2-dimensional plane. The simulation tracks the obits of the line…
Galileo's Moon Mountain  [ Computer Program ]
  
Match Score:
100
Byline:
T. Timberlake
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The Galileo's Moon Mountain Model illustrates the method used by Galileo to measure the height of a mountain on the Moon. Using his improved telescope design, Galileo was able to see…
Ptolemy/Copernicus/Tycho Model  [ Computer Program ]
  
Match Score:
100
Byline:
T. Timberlake
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The Ptolemy/Copernicus/Tycho EJS Model illustrates the relationships between the systems of planetary astronomy developed by Claudius Ptolemy, Nicholas Copernicus, and Tycho Brahe.…
Astronomical Parallax 3D  [ Computer Program ]
  
Match Score:
100
Byline:
T. Timberlake
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This Astronomical Parallax 3D Model illustrates the phenomenon of annual stellar parallax in astronomy. Parallax is the apparent displacement of an object relative to the background…
Stellar Aberration 3D  [ Computer Program ]
  
Match Score:
100
Byline:
T. Timberlake
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The EJS Stellar Aberration 3D Model illustrates the phenomenon known as the aberration of starlight, first reported by James Bradley in 1729. Aberration occurs because light has a…
  
Match Score:
100
Byline:
Publisher: D. Yeomans
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This NASA/Jet Propulsion Laboratory/Caltech website provides a full range of information, images, video, activities, and up-to-date news about the Curiosity Mars rover. A series of…
  
Match Score:
100
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Publisher: NASA
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This NASA website lays out NASA's four goals for the exploration of Mars. Each goal is described on a separate webpage--most with illustrations. The webpage for the fourth goal…
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Results #1-#10 of 100+