Astronomy Simulation

달의 위상 3

Phase of the Moon 2

It is only the sun that shines by itself in the solar system. Earth and moon do not emit light themselves. The earth and the moon only reflect the light of the…
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Diurnal Motion (WebGL)

If you are asked to access your location, please allow it. Your personal data is not stored on the server. Diurnal Motion Fix the camera towards the Polaris at night. When you…
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푸코의 진자 Foucault Pendulum

Foucault Pendulum (WebGL)

Foucault’s pendulum is a device invented by French scientist Leon Foucault to prove the Earth’s rotation In 1851. The fact that the Earth rotates has been known for a long time, but…
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케플러의 법칙

Kepler’s law

Kepler and Tycho Brahe There is an astronomer who must be mentioned before talking about Kepler (Johannes Kepler 1571 ~ 1630). That’s Tycho Brahe. Tycho Brahe (1546-1601) is a famous Danish astronomer.…
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도플러 효과

Doppler Effect

Doppler Effect We have heard an ambulance sirens and felt that the ambulance is getting closer. When the ambulance approaches, the sirens sound higher, and when they move away, the sirens sound…
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별의 시차 Stellar Parallax - 3D VR

Stellar Parallax – 3D VR

Parallax When an object is close to me, you can use a ruler to measure the distance. But, it is difficult to measure when the object is away from me. In this…
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달의 운동과 조석 Tides


Tides is the periodic rise and fall of the ocean surface due to the gravitational pulls of the moon and sun. Spring Tide is the highest high tide occurs during tide. Occurs…
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금성의 시운동 Apparent Motion of Venus

Apparent Motion of Venus

All planets in the Solar System revolve around the Sun in a counterclockwise direction when one views them from the north pole of the celestial sphere. Mercury and Venus are inner planets…
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태양계의 규모 Scale of Solar System

Scale of Solar System

Press the button of the planet you want to go. Orbital radii of the planets has applied the average.