Gravity

Gravity Simulator

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

Three Body Problem

Three Body Problem

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

Phase of Moon

Phase of the Moon

* 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

Phase of the Moon

Phase of the Moon 3

* 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

Tides Simulation

Tides

Tide is a phenomenon that the ocean surface’s periodic rise and fall due to the moon and sun’s gravitational pulls. Spring Tide is the highest high tide that occurs during the tide. It occurs when the … more

Real Size & Orbit of Earth and Moon

Real Size & Orbit of Earth and Moon

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

Eclipse Simulation

Eclipse

Solar eclipse Eclipse is the phenomenon that one object hides another object or enters that shadow. ‘a solar eclipse’ is the moon’s shadow by covering the sun. Lunar eclipse When the moon enters the shadow of … more

Phase of the Moon

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 sun. Since the earth … more

Why does the moon seem to follow me?

Why does the moon seem to follow me?

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