Planets

Explore planetary positions and motion through time in observer sky and orrery views, with Earth, the Sun, Moon and supported planetary systems.

Explore Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus and Neptune, subject to visibility settings. Observer sky and orrery views show different perspectives on planetary motion.

Orbit guides, the Earth–Sun plane and selected moon systems support geometric comparison. Display scaling and illustrative surfaces are not measurements of apparent size or visibility.

Read zodiac longitude, astronomical constellation membership using IAU boundaries, and the traditional mazal separately. A 30-degree zodiac sign is not the same thing as an unequal astronomical constellation. The observer and space views describe the same selected moment from different perspectives.

Jewish Cosmology is an interactive research and educational web application connecting Hebrew dates, traditional Jewish calendar calculations and halachic concepts of time with the observable motions of the Sun, Moon and planets, astronomical seasons and eclipses.

JavaScript is required for the interactive explorers and calculations. The descriptions and navigation remain available without JavaScript.