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The Spring 2011 issue of The Earth Scientist is focused on modernizing seismology education. Thanks to IRIS, you can download this issue for free as a pdf. Print copies are available in our online store.

How far? How big? Distance and Size in Astronomy

Need help trying to comprehend the vast distances between astronomical objects? Are you seeking to understand the relative sizes of planets, moons, asteroids, and comets? This page provides links to information, illustrations, images, animations, and interactives on Windows to the Universe about distance and size in astronomy.

Last modified April 21, 2006 by Randy Russell.

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The Fall 2009 issue of The Earth Scientist, which includes articles on student research into building design for earthquakes and a classroom lab on the composition of the Earth’s ancient atmosphere, is available in our online store.

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Windows to the Universe, a project of the National Earth Science Teachers Association, is sponsored in part by the National Science Foundation and NASA, our Founding Partners (the American Geophysical Union and American Geosciences Institute) as well as through Institutional, Contributing, and Affiliate Partners, individual memberships and generous donors. Thank you for your support! NASA AGU AGI NSF