Because of the wings’ high-altitude flight layout, the plane must essentially be halted in order to land.
Given that the aircraft had to fly at such high altitudes that pilots needed to wear specially made spacesuits to survive the difference in atmosphere, the idea that extraterrestrial life is tied to the site is also not entirely outlandish.
Here’s the very dull explanation: During the Cold War, when maintaining the confidentiality of US intelligence was crucial, experimental planes were tested at Area 51.
However, that doesn’t imply that aliens aren’t equally curious to see it, are they?