Dr. David Grinspoon, a signatory to the 2006 petition rejecting the IAU demotion of Pluto, argues in this Sky and Telescope article dated August 16, 2013, that the major flaw with the IAU planet definition is that it completely excludes exoplanets.
Go to http://web.ebscohost.com/ehost/detail?vid=3&sid=36c10510-93ca-425f-b49d-4495be45fc90%40sessionmgr104&hid=114&bdata=JmF1dGh0eXBlPWdlbyZnZW9jdXN0aWQ9Y2pybGMwODUmc2l0ZT1laG9zdC1saXZl#db=fth&AN=88458886 . On the left margin of the page, click on PDF Full Text to either open or download and save Grinspoon's article. He makes a lot of strong points, especially in light of the rapid rate of exoplanet discovery.
4 months ago
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