ptolemy
The Historic Discussion of Ptolemy’s Star Catalog
From the time of its writing in the 2nd century CE, Claudius Ptolemy’s Almagest stood at the forefront of mathematical…
Scientists Find an Ancient Stellar Catalog Written by Hipparcus Hidden in a Medieval Tome
Spectral imaging reveals the Hipparchus astronomical catalog was much more precise than we thought.
The Eridanus Constellation
Located in the southern skies is the Eridanus constellation, one of the original 48 catalogued by Ptolemy and one of…
The Equuleus Constellation
Welcome to another edition of Constellation Friday! Today, in honor of the late and great Tammy Plotner, we take a…
The Dorado Constellation
Located in the southern skies is the constellation of Dorado, one of the 88 modern constellations recognized by the IAU
The Delphinus Constellation
The northern constellation of Delphinus, located near the celestial equator, is one of the original 48 constellations compiled by Ptolemy
The Cygnus Constellation
Located in the northern hemisphere is the Cygnus constellation, one of the 48 constellations identified by Ptolemy and one of…
The Crater Constellation
Located in the southern hemisphere is the Crater constellation (aka. "the cup), one of the 88 modern constellations recognized by…
The Corvus Constellation
Located in the southern celestial hemisphere is the constellation Corvus (Latin for "the Raven"), one of the original 48 constellations…
The Corona Australis Constellation
In the southern skies lies the faint constellation known a Corona Australis (aka. the "Southern Crown"), one of the 88…