Astronomy Simulation

Zodiac

Zodiac

Zodiac The Ecliptic is the way the sun passes in the sky. zodiac means 12 constellations on the ecliptic. It is said that zodiac was made in Babylonia around the 7th century…
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기조력 Tidal Force

Tidal Force

+ = Tidal force Because the earth is not a point(·), it is a rigid body(●) with a certain volume, so the gravity on each part is slightly different. This difference in…
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갈릴레이 위성 Galilean Moons

Galilean Moons

Jupiter, the largest planet in the solar system, has many satellites. Jupiter’s representative satellites are Io, Europa, Ganymede, and Callisto. These four satellites are called Galilean satellites. Galileo observed that these satellites…
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인공위성의 궤도 Path of Satellite

Path of Satellite

As the satellite orbits the Earth from pole to pole, its east-west position wouldn’t change if the Earth didn’t rotate. However, as seen from the Earth, it seems that the satellite is…
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푸코의 진자 Foucault Pendulum

Foucault Pendulum (WebGL)

Earth fixed Latitude * This is a Web page using WebGL technology and do not work in Internet explorer. Foucault’s pendulum is a device invented by French scientist Leon Foucault to prove…
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지평 좌표계 Horizontal Coordinate System

Horizontal Coordinate System

Touch the screen to move the position of the star. How many numbers do we need to indicate the position of the star? After some time, is this star in the same…
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태양의 일주운동 Diurnal Motion of Sun

Diurnal Motion of Sun

Diurnal Motion is the changing view of the sky seen as the Earth rotates on its axis. What is the change in the movement of the sun during one year? What changes…
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