New Discovery Shows How Egyptians Moved Pyramid Stones.

A new look at a long-known mural has scientists thinking they've figured out how to best move the massive stones that made the pyramids…
http://www.iflscience.com/physics/mystery-how-egyptians-moved-pyramid-stones-solved

and to take care of the next question "where's the water in the desert", there's a big river called the Nile and they built canals…
http://news.nationalgeographic.com/news/2007/10/071024-ancient-egypt.html

and for the next question, this is how you can lift a big stone without modern technology (not that this is definitively how it was done, just demonstrating that it is entirely possible)

And here's a guy that can actually move the stone extremely easily…
http://theforgottentechnology.com

And for your final question, No…it wasn't aliens, and here is a 3 hr documentary that goes through the ancient aliens "evidence"…
https://www.youtube.com/watch?v=j9w-i5oZqaQ


and in case anyone else has more questions…like, well, how DID the pyramids get built, the simple answer is that we don't know for sure…but there are plenty of reasonable theories that require a lot of people, a lot of planning, and a lot of time, but nothing like ancient aliens…one of the more interesting new theories I've found is the internal ramp theory…
https://www.youtube.com/watch?v=Ws4O5LOCI68