Rick Rosner, American Comedy Writer, http://www.rickrosner.org Scott Douglas Jacobsen, Independent Journalist, http://www.in-sightpublishing.com Scott Douglas Jacobsen: This is Hindemburg Melão Jr. He asks, "Do you consider that dark matter is a satisfactory explanation for the anomalies observed in the rotation speed of galaxies?" and "What other alternatives do you consider plausible?" Rick Rosner: Yes, maybe. Suppose …

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