Full Breakdown
Celestial Events on November 29, 2025: Mercury, Saturn, and the Moon
11/30/2025, 11:52:35 AM
Mercury's Transition to Prograde Motion
On November 28, 2025, at 10 A.M. EST, Mercury reached its stationary point in the constellation Libra, marking the end of its retrograde motion and the beginning of its prograde movement. This transition made Mercury significantly brighter, observable in the eastern sky shortly before sunrise at a magnitude of 0.4. The planet displayed an 8”-wide disk that was 30 percent illuminated. Venus, shining at a magnitude of –3.9, was also visible, presenting a nearly fully illuminated 10”-diameter disk.
Evening Observations: The Moon and Saturn
As the day progressed, the Moon made notable passes, first coming within 4° north of Saturn at 2 P.M. EST and later passing 3° north of Neptune at 9 P.M. EST. By evening, the Moon had moved into the constellation Pisces, positioned to the upper left of Saturn. Saturn, appearing as a bright "evening star," was located less than 5 degrees to the lower right of the Moon.
The Waxing Gibbous Moon
On the night of November 29, the Moon, now in its waxing gibbous phase, was half-lit and provided an excellent opportunity for lunar observation. The terminator line, which separates the illuminated and dark sides of the Moon, enhanced the visibility of craters and mountain ranges, making it particularly suitable for telescopic viewing. An 8-inch telescope could reveal Saturn's horizontal bands and its iconic ring system, which was nearly edge-on to Earth at this time.
Saturn's Change in Motion
The evening of November 29 also marked a significant shift for Saturn, as it ended its retrograde westward movement through the stars of Pisces and began to track eastward once more. This retrograde motion occurs when Earth, in its orbit, overtakes more distant planets, creating the illusion of backward movement in the night sky.
Observational Challenges
While the Moon and Saturn were prominent in the night sky, Neptune remained largely invisible to the naked eye, located roughly 2 degrees below the Moon. Observers with telescopes of 8 inches or more might have been able to spot Neptune as a faint blue dot, although the brightness of the nearby Moon could complicate this observation.
Conclusion
The celestial events of November 29, 2025, provided a rich tapestry for skywatchers, with Mercury transitioning to prograde motion, the Moon's close proximity to Saturn, and the notable change in Saturn's movement. These occurrences highlight the dynamic nature of our solar system and offer unique opportunities for both amateur and experienced astronomers.
