The Chaucer Review: An Indexed Bibliography (Vols. 1-30)

Eisner, Sigmund. "The Ram Revisited: A Canterbury Conundrum." 28 (1994): 330-43.
Readers must realize that the sign of the Ram and the constellation of the Ram are completely different. The date given by the placement of the Ram at the beginning of the Canterbury Tales is April 17, but the references to the stars function on two different levels. On one level Chaucer tells about the mid-point of Aries. On the other Chaucer creates a pilgrimage between Aries and Libra, telling of the lifespan of humankind.

Hasenfratz, Robert. "The Science of Flatulence: Possible Sources for the Summoner's Tale." 30 (1996): 241-61.
The source for the solution to the problem posed in the Summoner's Tale reveals Chaucer's interest in astronomy and weather. Discussions of wind were often associated with discussions of thunder and the associated sound. Certainly the solution to the problem posed at the end of Summoner's Tale refers to the fourth book of Vincent of Beauvais's Speculum naturale in which these relationships and the wheel of the twelve winds are presented and discussed.

Olson, Donald W., and Edgar S. Laird. "A Note on Planetary Tables and a Planetary Conjunction in Troilus and Criseyde." 24 (1990): 309-11.
The conjuction Criseyde describes in Book III of Troilus and Criseyde matches exactly an actual conjunction that occured between May and June, 1385, as study of the Alfonsine Tables shows.

Parr, Johnstone, and Nancy Ann Holtz. "The Astronomy-Astrology in Chaucer's The Complaint of Mars." 15 (1981): 255-66.
The positions of the planets during Chaucer's time can now be accurately calculated, and Chaucer's references to the planets show precisely the year in which the "Complaint of Mars" is set. Readers cannot use this knowledge to date the poem precisely, however, because Chaucer had the knowledge to predict such planetary movement.