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Name: Justin
Status: Student
Grade: 9-12
Location: Ontario
Country: Canada
Date: April 2009


Question:
The mars sized planet as we know as the moon impacted the earth lots of years ago. Did the creation of the moon separate the super continent Pangea? Did the world have tides before the moon?



Replies:
Justin,

The proposed theory is more like this:

The proto-Earth and proto-Moon collided and essentially destroyed each other. That is, massive parts of both the proto-Earth and proto-Moon were destroyed so that when they each reformed to the current Earth and Moon, much mixing of parts actually occurred. Evidence of this for example is that the Moon is considered to have an iron core (much like Earth), whereas no other moon is known to be like this.

This means that very little of the features of the proto-Earth and proto-Moon features survived to the present day.

We also know that the Moon is receding from the Earth at a decelerating rate. This is considered to be evidence that the Moon was once much closer to the Earth. Thus, massive tides and major upheavals must have occurred at this time - which further emphasizes that any features of the proto-Earth and proto-Moon must have been erased during the collision.

Greg (Roberto Gregorius)


Last question, first. The Earth did have tides because or its revolution around the sun. Although smaller than the lunar tides, one still has to correct for them when measuring gravity.

As for the existence of Pangea and the collision that seems to have formed the moon. The collision apparently occurred well before the continent we know of as Pangea formed. I would think that a collision of that magnitude would have pretty much wiped out any continent existing at the time.

Robert Avakian



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