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Key Takeaways on the Seven Sisters Eclipse
The Seven Sisters Eclipse occurs when the moon in its waning crescent phase moves across the Pleiades and blocks the stars from view.
The event is not rare and has taken place every month since September 2023. The July 2025 event will occur on July 20 in the early hours of the day.
The Pleiades contain more than a thousand young stars bound together by gravity, the brightest of which can be viewed with the naked eye
On July 20, 2025, stargazers across much of the U.S. and Canada will be able watch as the moon in its waning crescent phase moves across the Pleiades (or Seven Sisters), temporarily obstructing the stars from view.
The event will occur in the early hours and to witness the moon in action, one can look towards the eastern horizon, ensure a clear line of sight, and avoid bright lights as much as possible.
“No telescope or binoculars will be needed, and the darker your viewing location (the fewer city lights around you) the better your view will be, though both objects can be seen even from bright cities,” says Anna Gammon-Ross, astronomer at the Royal Greenwich Observatory.
Viewing the Seven Sisters Eclipse
The Seven Sisters eclipse is not a spectacularly rare occurrence in and of itself. Indeed, according to Time and Date, the event has been taking place every month since September 2023 and is set to do so until July 2029. However, depending on whereabouts, it may or may not be visible as it can only be viewed from certain locations each month.
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