Category Astronomy Articles

This section covers the real, observable sky. From how the moon’s cycle works to identifying planets and constellations, these articles break down astronomy in a way that’s easy to follow and grounded in reality. No mysticism—just the mechanics of the cosmos and how to understand what you’re looking at when you step outside at night.

How Long is a Lunar Day

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Short answer: at a typical spot away from the poles, one lunar day (one sunrise to the next) lasts about 29.53 Earth days (29 days, 12 hours, 44 minutes). That usually means roughly two weeks of daylight followed by two…

Full Moon Dates 2027

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There are 12 full moons in 2027, starting with the Wolf Moon on January 22 and ending with the Cold Moon on December 13. Below you will find every date, the traditional name of each moon, and a free printable…

How Scientists Weigh the Moon

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Lunar Geodesy • Mass Determination How Do Scientists Weigh the Moon? Table of Contents Two Equations, One Ratio Barycenter and Mass Ratio Why GM Dominates The Error Budget Spacecraft Era – From Perturbations to Farside Tracking How Tracking Works –…

Wet Moon | Cheshire Moon

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Wet Moon: Why the Crescent Looks Like a Bowl or Smile Why a crescent Moon can look like a bowl or smile, what controls its orientation, and where this unusual lunar appearance can be seen. Quick Facts Also Known As…