The project uses flashing LEDs to represent the planets in order to simulate the mechanically scanned planetary motion known as the Orton Orrery. The Orrery is based on a single PIC16F627 ...

James is a published author with multiple pop-history and science books to his name. He specializes in history, space, strange science, and anything out of the ordinary.View full profile James is a ...

Before Johannes Kepler’s Third Law, the motions of the planets around the Sun were a mystery. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works.

Planetary retrograde is an apparent backward motion as seen from Earth, creating the illusion of planets moving in reverse while still orbiting the Sun normally.

NORFOLK, Va. — You may have heard of the term "retrograde," such as "Mercury retrograde." But what does that mean, exactly? When it comes to the Earth vs the other planets moving, things can seem a ...

A new analysis of chaos in the solar system reveals how planetary collisions are avoided over billions of years. When you purchase through links on our site, we may earn an affiliate commission.

Retrograde mean motion resonances occur when orbiting bodies, moving in directions opposite to the dominant sense of motion, experience periodic gravitational interactions that can stabilise their ...

PITTSBURGH (KDKA) - I like to take pictures and make time lapses, and a fun thing to do is take long exposure pictures. To get a long exposure, you leave the camera's shutter open for a long period of ...

The Antikythera mechanism is one of the most astonishing discoveries in archaeology. Salvaged from a 2,000-year-old shipwreck in Greece in 1900, the intricately geared contraption was quickly ...

When it’s necessary to convert motion from rotary to linear, engineers usually use ball or leadscrews. But planetary roller screws, such as those from INA, a brand of the Schaeffler Group USA, Fort ...