alien findings

Hi, I have found strong evidence that aliens may exist:

1. In Egypt they used granite for their pyramids which is one of the hardest materials known to man, and yet the egyiptians cut it from the rock bed and carved it as if it was wood.
   
2. The shape of the blocks they used to make the pyramids were so perfect that they would have had to have use laser technology. Copper tools were the only tools available.
   
3. Each block weighed in at approximately 50 tonnes. Hauling these into position, 180 feet above the ground after moving it 600 miles from its quarry would be something that machines would struggle with, let alone half starved slaves.
   
4. Plus in the 21st century we cant duplicate the achievements of the Ancient Egyptians.

Do you know where the ankhs went.
and why the pyramids are in the same alignment as sirius?