(OK, Earth's orbit ... moon interacts with both the Earth and the sun, the solar interaction is stronger. Of course, the motion of the moon depends on the sum of these forces. Look at this diagram ...

Let me give some values for the sizes of these things, then I will make some sort of diagram ... sun is pretty far away. And this is the problem. How do you show the orbit of the Earth and moon ...

One spin of the Earth is how we measure one full day. While the Earth is spinning to give us day and night, it is also moving around the Sun. This movement is called an orbit. One orbit of the ...

On August 21, around lunchtime in most cities in the United States, a total solar eclipse will pass through the country, moving from Oregon to South Carolina. During a total solar eclipse, the ...

Revera via Wikimedia Commons under CC BY-SA 3.0 The moon, Earth's natural ... is one of Earth's five known quasisatellites. As quasisatellites orbit the sun, they stick close to Earth but never ...

However, at other times, such as during an annular solar eclipse, the sun and moon appear to be different sizes. This is because the moon's orbit around Earth (and Earth's orbit around the sun ...

Does the moon have seasons? The Earth's axis of rotation is tilted about 23.5 degrees in relation to the ecliptic plane, an imaginary disk through Earth's orbit around the sun. This means the ...