Overview of major sky events in 2026, including solar and lunar eclipses, planetary motion, meteor showers, and comet appearances ...

Perihelion, the point in a planet’s orbit where it is closest to the Sun, is a fascinating phenomenon that shapes much of our understanding of planetary motion. While Earth’s proximity to the Sun ...

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.

After more than a decade of observations, Northwestern University astrophysicist Jason Wang has constructed an amazing time-lapse video of four planets larger than Jupiter as they revolve around their ...

The planets of our solar system move in ellipses. We've known this, so we are told, ever since Johannes Kepler devised his laws of planetary motion in the early 1600s. While it's true that orbits are ...

Johannes Kepler was a 16th century astronomer who established three laws which govern the motion of planets around the sun. These are known as Kepler’s laws of planetary motion. These laws describes ...

Astronomers have confirmed the existence of a massive planet in the Nu Octantis binary star system, first suspected in 2004. Using advanced tools like the HARPS spectrograph, researchers found that ...

The Kepler telescope, which has provided so much information on planetary bodies outside our solar system, was not idly named. Johannes Kepler, who the telescope was named for, was a German astronomer ...

The components get assembled into a planetary gearhead with a roller chain replacing the traditional ring gear. They are assembled into a complete gearhead from Gearing Solutions. Durable gears for ...

When we are talking about astronomy, it is hard to not mention Johannes Kepler. A German astronomer and mathematician, Kepler was one of the central figures in the scientific revolution of the 17th ...