Christies will auction a work of considerable scientific gravitas on July 13 in London. It is a first edition of the first printed book to propose that the Earth revolved around the Sun. Rheticus ...

Galileo's 1610 telescopic observations of Venus's phases provided evidence supporting a heliocentric model, as these phases could only occur if Venus orbited closer to the Sun than Earth. Stellar ...

Some atheists would have us believe Fr. Nicolaus Copernicus was fearful of publishing his heliocentric model because of the Catholic Church. This is completely untrue. In fact, several high ranking ...

Question: What would happen if the sun rotated around the earth? Answer: You asked this because you learned the earth revolves around the sun, right? Indeed, that is how we understand the solar system ...

A previously unknown first edition copy of Nicolas Copernicus’ landmark scientific text, De revolutionibus orbium coelestium (On the Revolutions of the Celestial Spheres), sold at auction for £277,200 ...

Current issues are now on the Chicago Journals website. Read the latest issue. Since its inception in 1912, Isis has featured scholarly articles, research notes and commentary on the history of ...