Most of the histories are repeating themselves.

The politeia of Dorian Sparta was noted by many classical authors for its unique features, which supported a rigidly layered social system and a strong military. The earliest archaeological artifacts in Iran attest to a human presence since the lower paleolithic. While the Sputnik launch was a single event, it marked the start of the Space Age.

Notes: Modern physical cosmology is dominated by the Big Bang theory, which attempts to bring together observational astronomy and particle physics, more specifically, a standard parameterisation of the Big Bang with dark matter and dark energy. All of this material was accumulated and sorted by hand and machinery. Also, there are no cookies.