Tag Archive: Moon

We only see one side of the moon due to the tidal locking of the Moon to Earth. However, we get to see a little more than half the moon. Due to lunar libration we see about 59% of the Moons surface. This libration is due to the dynamics between the Earth and Moon.

The video shows a simulation of one phase cycle of the Moon.

Lunar libration video

This video is a short documentary on the Collisional Ejection Theory for the creating on the Earth’s moon. It features Bill Hartmann and Robin Canup who were important figures in the development of this theory.

This is an image of the Earth and Moon from a distance of 138 million kilometers (114 million miles) by the MESSENGER spacecraft. They are located in the bottom left of the photograph.


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