Yes, you heard correctly.  Archeoastronomy is an interdisciplinary combination of archaeology and astronomy, and it is a real science(sortof).  The first civilizations had some time on their hands, and no electricity, so dark skies were of course the norm.  Many thousands of years ago, the night sky appeared very differently from it’s current configuration. Using the current proper motions of stars and backtracking, we can study the astronomy of ancient cultures as they might have seen it.  For example, Polaris, our north star, was not near the earth’s axis at all during the height of ancient Egypt, 4500 years ago.  Rather, another star, Thuban, served as the north celestial pole star.
The Great Pyramid was built with extreme precision.  Each side is aligned with astonishing accuracy to the cardinal directions, with no misalignment greater than 5.5 arcmin. No two sides differ in length by more than 20cm, it is nearly a perfect square.  But the strangest alignment featured in the great pyramid is astronomical.  By backtracking, astronomers have determined that the air shafts that connect to the king’s tomb are aligned with the past positions of stars.  The Pharoh’s soul needed to travel to join Osiris, which we now know is the modern constellation Orion. The other air shaft points toward Thuban.  While the ancient understanding of the stars was far different than ours today, it was one filled with similar reverence and wonder.

From Intro to Modern Astro, Ch 1.3.