Pin the Earth * This is a web page using WebGL technology and do not work in Internet explorer. Diurnal Motion Fix the camera towards the Polaris at night. When you shoot for a few hours in that state, you…
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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 the Earth’s rotation In 1851. The fact that…
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Zoom View * This is a Web page using WebGL technology and do not work in Internet explorer. Earth Rotation and Seasonal Changes The Earth’s axis of rotation is tilted at an angle of about 23.5 ° to the orbital…
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Name of the Orb Run The Geocentric theory The Geocentric theory is a cosmic perspective in which the Earth is at the center and all the stars revolve around the Earth. From the 13th to the 17th century, it was…
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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 position or go elsewhere? What are the weak…
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Why do we always see the same side of the moon? The moon’s rate of rotation and rate of revolution is the same
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 will occur around us as the sun’s movement…
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Most of the distant galaxies are moving away from our galaxy. Only a fraction of galaxies like Andromeda are coming to us. Scientists have found these things simply by observing the universe. How did you find out?
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 in the Solar System. They are closer to…
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What is the difference between Geocentric theory and Copernican theory? What is the phase of Venus, which can not be found in the Geocentric theory?
Click the button to move to the planet you want. Is it closer than you think? If not, why?
