With the geocentric model, the earth is at the center of the universe, and the planets rotate around the earth. But from the outset, this model was flawed. Astronomers observed that the planets do not ...

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 ...

Astronomy, the oldest of natural sciences, has changed often throughout history depending on general knowledge, geographical region and culture. The earliest practitioners of astronomy were early ...

These days, we are treated to glorious images of the cosmos through astrophotography and sophisticated three-dimensional visualizations of the universe. In the early centuries of astronomy, however, ...

Could Earth be the only place in the observable universe harboring a civilization like ours? A new hypothesis challenges how we think about our place in the cosmos—not with philosophical musings, but ...

Astronomers have developed a computer simulation to explore, in unprecedented detail, magnetism and turbulence in the interstellar medium (ISM)—the vast ocean of gas and charged particles that lies ...