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Exhibition Guide

The Solar System

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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.
Next to the Earth is the world of our Solar system. In this exhibition, you can see planets and satellites on large-scale screens, images of solar system objects, as well as information on planetary motion and gravity, planetary exploration experience, asteroids and minor planets, Trans-Neptunian objects and types of planets.

Additional Knowledge

[Where does the Solar System end?]
How far does our solar system go? The solar system extends itself much farther than Trans-Neptunian Objects, which are objects located farther away than planets are from the sun. The flow of particles emitted from the sun is called the solar wind and the area that the solar wind reaches is called heliosphere. The boundary of the heliosphere is called the heliopause, which is generally thought to correspond to the end of solar system. To find out the location of the heliopause, Voyager 1 and 2 was launched in September and August 1977, respectively. Both Voyagers continue flying towards the outside of the solar system after they have finished their planetary exploration.


【 References 】

Article by Astronomy Section


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