Earth’s companion has allowed astronomers to define lunar cycles, navigate without technology, and understand celestial movements.

Posted: June 11, 2025 | Last updated: June 13, 2025 Photoshop CS6 tutorial showing how to make a colorful nebula and celestial sphere in deep space.

Physics and Python stuff. Most of the videos here are either adapted from class lectures or solving physics problems. I really like to use numerical calculations without all the fancy programming ...

This flying tourbillon with a 'mysterious' design is housed in a gold case, where its cage is seemingly suspended by a hidden ...

To understand how the “wobble” of the 26,000-year-precession cycle has no noticeable effect on the Sun’s rise and set points, imagine the celestial sphere of stars that surrounds us.

NASA is funding a project at the University of Utah that brings real-time visualizations of satellites for use by researchers, planetariums and educators.

The giant celestial sphere that he holds measures 21 feet in diameter. The Atlas sculpture was a collaboration between Lee Lawrie and Rene Paul Chambellan.

The statue is 2.1 meters tall, and the sphere held by the Titan has a diameter of 65 centimeters. Apart from being the oldest sculpture of Atlas found to date, the work is significant because it shows ...

Moscow has also warned it could begin shooting down American satellites aiding Ukraine, including SpaceX’s broadband-beaming sats, extending its military belligerence into the celestial sphere.

Despite how different they are today, astronomy and astrology share the same ancient roots. Both were strongly driven by a need to understand the movements of objects in Earth's celestial sphere.