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Tonight’s First Quarter Moon Offers a Simple Lesson in the Lunar Cycle
The Moon reaches its First Quarter phase on May 23, with about 48% of the visible face illuminated, offering an easy night-sky marker for where the current lunar cycle stands.
Key Takeaways
- The Moon is in its First Quarter phase on May 23 with about 48% illumination.
- Several lunar maria are visible to the naked eye, with more detail available through binoculars or a telescope.
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DT Editorial Team··via mashable.com