The Moon will glide in front of the Pleiades — a stellar group located 444 light-years away. Under dark skies, you’ll see the stars vanish one by one… then reappear, like a slow-motion magic trick.
🗻 Best viewed just after sunset — find a clear horizon and look up!
📸 Don’t forget to catch this once-in-a-decade sky ballet — where myth meets motion in the heavens.
2025/7/19 Edited to
... Read moreYou know, an event like the Moon dancing with the Seven Sisters on July 20, 2025, really makes you appreciate the cosmos! It's not just about witnessing the celestial ballet; it also gets me thinking about the stars themselves. Specifically, the Pleiades star cluster, those beautiful 'Seven Sisters' everyone talks about. While we're all excited to see the crescent moon glide past them, have you ever wondered about the individual stars and their names? I certainly have!
It's a common 'trick' question among stargazers: 'Can you name all the Seven Sisters?' Well, technically, there are nine main stars named for figures in Greek mythology – the seven daughters of Atlas and Pleione, plus their parents. With good eyesight, from a dark blue sky, you might spot six or seven with your naked eye, making the 'Seven Sisters' name a bit of a mystery for some. But knowing their stories makes the view even more magical, especially if you're looking from a place with snow-capped mountains, like near a mountain observatory, where the skies are usually clearest.
So, let's dive into the 'name trick' for these famous stars! The seven daughters are Alcyone, Celaeno, Electra, Maia, Merope, Taygeta, and Asterope (sometimes referred to as Sterope). Their parents are Atlas (the Titan who held up the sky) and Pleione. Trying to recall them all can be a fun challenge, but here's how I like to remember them, by grouping them or associating them with a story:
A simple mnemonic I learned that helps me keep them straight is to think of their initial sounds or a short phrase. For example: 'A C E M M T A' for Alcyone, Celaeno, Electra, Maia, Merope, Taygeta, Asterope. Or, you can think of the myths. Alcyone is often considered the brightest star, a true beacon. Merope is often called the 'lost Pleiad' because she's fainter, supposedly ashamed of having a mortal lover. This little story helps me remember her name and why she stands out (or rather, blends in!).
Another way to think about the 'name trick' is through their mythological tales. The Pleiades were nymphs, chased by Orion, and saved by Zeus who transformed them into stars. Each sister has her own story:
Alcyone: The central and brightest star, often depicted as a leader.
Maia: The eldest and mother of Hermes.
Electra: Mother of Dardanus, founder of Troy.
Merope: The 'lost' or 'veiled' Pleiad, the only one said to have married a mortal.
Taygeta: Seduced by Zeus, mother of Lacedaemon.
Celaeno: Mother of Lycus and Eurypylus by Poseidon.
Asterope (or Sterope): Often paired with Taygeta, mother of Oenomaus.
Understanding these connections can make remembering their names less of a 'trick' and more of a fascinating journey into ancient astronomy and folklore.
When you gaze up on July 20, 2025, hoping to catch the Moon dancing with the Seven Sisters, try to pick out these individual stars and remember their names. It adds another layer of wonder to this already spectacular event. It truly makes you feel more connected to the vastness and the stories woven into our dark blue sky. Happy stargazing!