The Solar System consists of the eight planets that orbit our Sun and other celestial bodies such as moons, comets, asteroids, minor planets, and dust and gas. The Sun is considered as the centre of ...

Before heliocentrism was proposed, Earth was thought to be at the center of the universe. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works.

Lighting experts foresee a day when the incandescent bulb -- and its warm, flattering glow -- will be no longer, and in its place everywhere will be the energy-efficient but cold glare of the compact ...

The Leiden Sphaera — the dynamic model of the solar system pictured above — was built around 1670 by Dutch clockmaker Steven Tracy. The impressive cosmic model measures 1.5 meters across, and is ...