Triple Conjunction 2025: Tomorrow, the Moon, Venus, and the bright star Regulus will be visible in the sky, all in a very close conjunction.

On September 19, the crescent moon will be visible in the lower right corner, next to Venus and Regulus. (Photo: Matt Champlin via Getty Images)

This week, astronomy enthusiasts will be treated to one of the best naked-eye stargazing shows of the year—if you can get up before sunrise on Friday (September 19). Just before sunrise, the crescent Moon, the bright planet Venus, and the bright star Regulus (the brightest star in the constellation Leo) will gather together on the east-northeastern horizon.

The distance between the three objects will be just half a degree, less than the width of your little finger held up to the sky. This triple conjunction, visible to the naked eye, is a rare sight well worth seeing.

The waning crescent moon, visible low in the eastern sky about 90 minutes before sunrise, will be illuminated to about 6%. The slender moon itself will present a magnificent spectacle thanks to the added effect of “earthshine”—sunlight reflecting off the Earth and illuminating its dark side. This dazzling display will be visible to both the naked eye and simple stargazing binoculars.

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Residents of northeastern Canada, Greenland, Western Europe, and North Africa will see an even closer conjunction, during which the Moon will briefly eclipse Venus (block it). According to In-The-Sky.org, the positions of these three objects will vary depending on the observer's location, as the Moon will be so close to Earth that its position in the sky will vary by as much as 2 degrees in different parts of the world. This also means that lunar eclipses will only be visible from a portion of Earth's surface at any given time.

In the days following the close conjunction, the crescent moon will shrink in size and become an invisible new moon on September 21, causing a partial solar eclipse visible from New Zealand, Antarctica, and the western South Pacific. On September 22, the autumnal equinox, day and night will be roughly equal across the planet, heralding longer nights for stargazing in the Northern Hemisphere. Venus will remain the bright “Morning Star” for the rest of the month.

Jamie Carter, Social Link Navigator, Live Science Contributor

Jamie Carter is a freelance journalist and regular Live Science contributor from Cardiff, UK. He is the author of “Stargazing for Beginners” and lectures on astronomy and nature. Jamie regularly writes for Space.com, TechRadar.com, Forbes Science, BBC Wildlife magazine, Scientific American, and many other publications. He edits the website WhenIsTheNextEclipse.com.

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