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2 comments:

Anonymous said...

I think I've figured out what these are... they are meteors containing extremely dense elements from within our solar system that have not been found on earth... So as they enter the earths atmosphere they burn up very slowly and are not moving very fast either. Sometimes the elements have little mass, so they get moved around by the earths natural atmospheric conditions, such as wind or pressure differences.

Anonymous said...

plastic 'wal-mart' bags?

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