When asked who was the first to propose the heliocentric theory—that is, the one in which the Sun is the center of the ...

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 ...

This chart, from around 1660, shows the signs of the zodiac and a model of the solar system with Earth at the centre. For decades or even centuries after Kepler clearly demonstrated that not only is ...

This story is a collaboration with Biography.com. Far back in 1508, with only limited tools at his disposal, Nicolaus Copernicus developed a celestial model of a heliocentric planetary system, which ...

The rare manuscript is believed to be one of only 277 known copies of Copernicus' book worldwide. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works.

Some would have us believe that Father Nicolaus Copernicus was fearful of publishing his heliocentric model because of the Catholic Church. This is completely untrue. In fact, a pope, two cardinals ...

In 1508, Nicolaus Copernicus developed a celestial model of a heliocentric planetary system that transformed the way we view the universe. This bold theory, contrary to the geocentric model favored ...

In 1543, Polish mathematician and astronomer Nicolaus Copernicus published his theory of a heliocentric universe in which the Earth and other celestial objects revolve around the sun. It was met with ...

Edwin Hubble’s photo; Martellus’ world map; Copernicus’ diagram of the solar system. Edwin Hubble’s photo that provided the first clue in calculating the size of the universe; the Apollo program’s ...

Ibn-al-shatir's lunar model from which Copernicus is reported to have borrowed in composing his cosmological model. Credit: https://www.ccvalg.pt/astronomia/historia ...

Yesterday, the 62nd General Assembly of the United Nations proclaimed 2009 the International Year of Astronomy, with the aim of increasing awareness among the public of the importance of astronomical ...