Originally posted by Codger
While the shape at first looks interesting it's not unusual either. You can see similar shapes and wierder ones in any casting foundry or smelter
from spillage.
I thought it could be something like that to, but after reading the report from Joe Fandrich of Mesa State College that Dr. Gibbons posted earlier,
gives the following description of being formed while passing through the atmosphere.
Detailed Optical Microscopy
The surface of the aluminum object is ornamented by melt particle migration “feathers”. These feathers are actually thousands of minute tails that
have resulted from molten aluminum migrating from the frontal area of the primary object to the rear and ultimately forming a tail. This process of
melt material migration began as the object’s surface temperatures came greater than +/- 600 degrees C or about the temperature that can be attained
in a common household oven. The increase in surface temperature of the object is a result of friction developed as the object passed through a gaseous
atmosphere at high velocity. At +/- 600 degrees C ablation of the primary object begins and melt material migration toward the tail is initiated. The
presence of the feathered surface, a tail and an ablation ring support this bservation.
When he mentions 600 degrees C, that is the same as 1112 degrees Fahrenheit. I don’t know of any household ovens that get that hot, but the point is
it was formed while falling through the atmosphere.
Even though aluminum is a very commonly used metal, it rules out being formed naturally, so if it is proven that it did not come from earth, then some
intelligence other than ours must have refined it.