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A E T H E R E A L A S T R O N O M I C A L, W H I C H A P P E A R E D
in the high Aether in the year MDLXXX in the months of October, November, and December. Also, a description of certain terrible and portentous Chasmata gaping voids or celestial lights, which were seen in these years MDLXXX and MDLXXXI.
BY THE AUTHOR
M. MICHAEL MÄSTLIN OF GÖPPINGEN.
Ordinary Professor of Mathematics at the University of Heidelberg.
A celestial map depicts the path of a comet through various constellations including Cassiopeia, Pegasus, and Sagittarius, with labels for stars and ecliptic lines.