Nagoya City Science Museum

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Exhibition Guide


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Purpose of Exhibition

Celestial objects and various information on astronomy subjects are displayed on the perimeter of this exhibition room. Walking clockwise along the wall, we can travel through the scale of the universe starting from the size of the Earth to the edge of the universe.
This scale is based on the notion of "Powers of Ten (10 no Bekijyo, in Japanese)", making the lengths of each step you take 10 times longer then the last one.

Now, after the Earth and our Solar System, we will move on to the world of stars. You can see images of nebulas and star clusters on the big screen, as well as stars forming a constellation when you look at them from the center of the exhibition room. We will introduce the world of stars including their size, temperature, color, and brightness. Also, we explain about objects such as binary stars, variable stars, nebulas, star clusters and black holes.

Additional Knowledge

<Name of Stars>
Stars have numerous and different names. For example, Vega or Altair are proper names, many of which originated from Arabic, but they are also referred to as "Orihime (Vega)" and "Hikoboshi (Altair)"in Japanese. There are also names for them decided in a systematic way, related to the constellation they belong to. Vega is the αLyra and Altair is the αAquila, which are their names in the Bayer designations.

Although the majority of the systematic naming of stars are after the order of their brightness, there are some exceptions like the Ursa Major, named in their order on the Big Dipper. Furthermore, there are names like Flamsteed designation where a number is assigned to each star among the constellation they belong, or numbers used in several celestial catalogs individually for classification. These names are assigned since everyone is free to give a name to a star. You can even call them with your own name. Possessing and selling these names shouldn't happen, as stars do not belong to anybody.


【 References 】

Article by Astronomy Section


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