Pleiades stargazing guide, Pleiades location, Seven Sisters stars, M45 star cluster, Taurus constellation, Orion’s Belt

 

✨ Pleiades Seven Sisters Meaning and Location | Greek Mythology to M45 Stargazing Guide

Have you ever seen a small cluster of blue-white stars shaped like a tiny dipper in the winter night sky? There is a good chance you were looking at the Pleiades.
The Pleiades are also known as the Seven Sisters, one of the most beautiful and well-known star clusters in the night sky.
However, it is important to know that the Pleiades are not a single constellation. They are a star cluster made of stars that formed together.
It is a famous celestial object where Greek mythology and modern astronomy meet.






✨ What Is the Pleiades?

The Pleiades are also called Messier 45, or M45. They are an open cluster. An open cluster is a group of stars that formed at almost the same time from the same molecular cloud and remain loosely connected by gravity.

The Pleiades are located in the direction of the constellation Taurus. They are about 440 light-years away from Earth. Because several stars in the cluster are bright enough to be seen without a telescope, people have used them as a seasonal marker for thousands of years. (NASA Pleiades M45 Guide)

The cluster is about 100 million years old and contains roughly 1,000 stars. The blue haze visible in photographs is not smoke from newly formed stars. It is a reflection nebula, which means dust around the stars reflects their blue light. (NASA Visualization of the Pleiades)




✨ The Seven Sisters in Greek Mythology

The name Seven Sisters comes from Greek mythology. The sisters are Maia, Electra, Alcyone, Taygete, Asterope or Sterope, Celaeno, and Merope.

In mythology, they are the daughters of the Titan Atlas and Pleione. One well-known story says that Orion chased the sisters, so Zeus turned them into doves and placed them in the sky as stars. This is not an astronomical fact. It is a cultural story created to explain and remember the stars. (Canada-France-Hawaii Telescope: Pleiades Story)

Interestingly, the Pleiades are not important only in Greek mythology. Many cultures, including Hawaiian, Aboriginal Australian, and Indigenous American traditions, also connected this star cluster with sisters or groups of women. People in different parts of the world saw the same small cluster of stars and created their own stories around it.

✨ Why Can Most People See Only Six Stars?

The name Seven Sisters may make people expect to see exactly seven stars. However, most people can see only about six stars with the naked eye. NASA also describes the Pleiades as a cluster in which about six bright stars are commonly visible without equipment. (NASA Visualization of the Pleiades)

The number of stars you can see depends on your eyesight, the darkness of the sky, moonlight, and light pollution from cities. In a very dark place, after your eyes adjust to the darkness, you may see more than six stars. In a city, the entire cluster may appear as only a faint group of light. (EarthSky Pleiades Guide)

Greek mythology includes several stories about a “lost sister.” One story says Merope became dim because she married a mortal man and felt ashamed. However, the scientific explanation is simpler. No star disappeared. Some stars are just fainter than others, and viewing conditions are different for every observer.

✨ How to Find the Pleiades in the Night Sky

In the Northern Hemisphere, including Korea, the Pleiades are easiest to find in the evening sky from around October to April. They are especially noticeable during winter, near the constellation Taurus. (NASA Visualization of the Pleiades)

A simple way to find them is to start with Orion’s Belt. First, locate the three bright stars that form Orion’s Belt. Follow that line across the sky toward the reddish star Aldebaran. Move a little farther in the same direction, and you will find a small, compact group of stars. That is the Pleiades. (EarthSky Pleiades Guide)

The Pleiades are often more beautiful through binoculars than through a high-powered telescope. A telescope may zoom in too much and show only part of the cluster. Binoculars provide a wider field of view, making it easier to see the many stars grouped together.

The next time you look up at the winter sky and notice a small blue-white cluster of stars, remember that you are seeing the Seven Sisters. You can also explore NASA’s Pleiades M45 guide and try finding the cluster for yourself.


**The Pleiades (플레이아데스), also known as the Seven Sisters (일곱 자매)**, is one of the most famous and beautiful star clusters in the night sky.


### Astronomy Facts

- **Location**: In the constellation Taurus (황소자리).

- **Type**: Open star cluster (산개성단), Messier 45 (M45).

- **Distance**: About 440 light-years from Earth.

- **Composition**: Over 1,000 stars, born from the same cloud of gas and dust. They are young, hot, blue stars.

- **Visibility**: With the naked eye, most people see **6 bright stars** forming a small, misty dipper or cluster. Some with excellent eyesight can see 7 or more. Binoculars or a small telescope reveal dozens of stars and a beautiful blue reflection nebula.


It is easily visible in the winter sky in the Northern Hemisphere (currently prominent in the evening).


### Greek Mythology: The Seven Sisters

In Greek mythology, the Pleiades are the **seven daughters of the Titan Atlas** (who holds up the sky) and the sea nymph **Pleione**:

- **Maia** (brightest)

- **Alcyone**

- **Asterope** (or Sterope)

- **Celaeno**

- **Taygete**

- **Electra**

- **Merope**


The story varies slightly, but commonly: The sisters were pursued by the hunter **Orion**. To protect them, Zeus turned them into doves (or stars) and placed them in the sky. One sister (often Merope or Electra) is said to be "hidden" or dimmer, explaining why only six are easily visible — she hides in shame or grief.


### Global Cultural Significance

The "Seven Sisters" motif appears in myths worldwide, including Indigenous Australian, Native American (e.g., Nez Perce), Polynesian (Matariki), and others. Some researchers suggest these stories may be incredibly ancient — possibly tens of thousands of years old — based on shared themes of "seven sisters, one lost."


In Korea, it's traditionally called **좀생이별** (Jomsaengibyeol) or related to the 昴宿 (Mao Su) in Chinese astronomy.