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Formation of the Moon
 

When the samples of lunar surface were first delivered to the Earth, the scientists were able to assess the Moon's age using the methods of radioactive decay. The Moon rocks became solid approximately 4.4 billion years ago.

According to the theory proposed by Russian astronomer Eugene Ruskol, the Moon was formed from the remnants of protoplanet substance that was surrounding young Earth. US astronomer Alister Cameron developed a different theory. He argued that the Earth collided with a large celestial body during its early formation stage. Fractures that were discharged as a result of this collision came together to form the Earth's satellite. This model illustrates the latter theory.

Pressing "Run" button to initiate the model, press "Stop" to bring it to a halt, and press "Reset" to return the model to its initial state.

 
© OpenTeach Software, 2007