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

Einstein’s special theory ... of the universe’s thunderous launch. Ever since then the image of the big bang has shaped and directed the work of cosmologists as strongly as Ptolemy’s ...

“Certainly,” Gingerich says, “Ptolemy did not commit fraud. And his great contribution of the geocentric theory,” he adds, “was the true testament to Ptolemy’s greatness as an astronomer.

Einstein's special theory ... glow of the universe's thunderous launch. Ever since then the image of the big bang has shaped and directed the work of cosmologists as strongly as Ptolemy's ...

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 ...

Now researchers have managed to recover the text written by Ptolemy on a parchment that suffered such a previous recovery attempt. Outermost six rings of the meteoroscope, not to scale.

Newton’s theory of universal gravitation says that every particle in the universe attracts every other ... (reinforced by Greek astronomer Claudius Ptolemy) which said that objects only moved ...