Seleucus of Seleucia was an ancient astronomer who defended heliocentrism, arguing that Earth orbits the Sun and rotates on ...

AT the meeting on Monday of the Royal Geographical Society, Dr. H. Schlichter read a paper on “Ptolemy's Geography of Eastern Equatorial Africa.” Ptolemy, as a geographer, has received very ...

Suddenly left without his trusted caretaker, Ptolemy Grey is assigned to the care of orphaned teenager Robyn. When they learn about a treatment that will restore Ptolemy’s dementia-addled ...

Arab traders were the reason for they had started accepting Islam. The book referenced to the works of Claudius Ptolemy, who was born and died in Egypt and is known as a Greco-Roman mathematician ...

The Ptolemaic Dynasty, to which she belonged, was founded by Ptolemy I Soter, one of the four generals of Alexander the Great (Ptolemy, Cassander, Seleucus, and Antigonus). This family, of Macedonian ...

since it allowed the scientist and historian Claudius Ptolemy (100-175 CE) to provide for modern scholars a fixed date in history on which our conceptions of ancient years can be made accurate.

Astronomers, both professional and amateur, are obsessed with stellar magnitudes. For professional astronomers, stellar ...