Science Simulations
This simulation … Applied a geocentric coordinate system. Air friction is ignored. Covers fall and orbital motion due to Earth’s gravity. (However, the same can be applied to other celestial bodies.) Gravity Objects with mass exert … more
x y Vx Vy * The mass and gravitational constant of the celestial body were each assumed to be ‘1’. * You can edit the position and speed of each celestial body while not running. * … more
* If you are asked to access your location, please allow it. * Your personal data is not stored on the server. * For iOS devices, please allow location access as follows. It is only the … more
* If you are asked to access your location, please allow it. * Your personal data is not stored on the server. * For iOS devices, please allow location access as follows. It is only the … more
The photographs of the Earth and the moon close together that you can see on posters, etc., are designed to be easy to see. The moon’s apparent diameter is only about 0.5˚. This tells us that … more
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 sun. Since the earth … more
Why do we always see the same side of the moon? The moon’s rate of rotation and rate of revolution is the same.
Is the moon really following me? How can you explain that the moon looks follow I? The moon doesn’t follow me. For example, if I go forward with a car, the landscape seems to move backward. … more
The reason why the moon rises 50 minutes late every day While the Earth rotates once a day, the Moon moves to the east little by little. So it takes 50 minutes to 24 hours for … more
