How were the pyramids of egypt built?
The most widely accepted theory is that the ancient Egyptians built the pyramids using a combination of manual labor and simple machines. The Egyptians used a system of ramps and sleds to pull up and move the large stones which make up the pyramids. They also used a type of mortar to hold the stones together. The most impressive of the pyramids, the Great Pyramid at Giza, is thought to have been built using an internal ramp system that was slowly built up as the pyramid grew in height.
Tell me about the ancient alien theory about them. How likely is this theory?
The ancient alien theory suggests that extraterrestrial beings visited Earth in the distant past and provided advanced knowledge to ancient civilizations, including the builders of the pyramids. According to this theory, aliens may have provided knowledge of advanced construction techniques, astronomical alignments, and other advanced knowledge that allowed the pyramids to be built.

However, the ancient alien theory has been met with skepticism by many scholars and experts in fields such as archaeology, history, and astronomy. The mainstream view is that the pyramids were built by skilled human labor and ingenuity, and there is no evidence to suggest that aliens played a role in their construction.

Some proponents of the ancient alien theory point to various anomalies and unexplained features of the pyramids, such as the precision of their construction and their alignment with astronomical phenomena. However, many of these anomalies can be explained by human ingenuity and knowledge of mathematics, astronomy, and engineering.

Furthermore, the ancient alien theory raises many questions and uncertainties that are difficult to answer or verify. For example, it is unclear why aliens would have visited Earth and provided knowledge to ancient civilizations, or how they would have communicated with humans.

Overall, while the ancient alien theory about the pyramids may be an interesting and intriguing idea, there is currently no convincing evidence to support it, and it is generally regarded as unlikely by mainstream scholars and experts.