Solar system: Did you mean...?

Archelaus of Athens (l. c. 5th century BCE) was a Pre-Socratic philosopher in ancient Greece who claimed the first cause of existence was the opposition of cold and heat which caused the separation of the universal essence...

The civil service examinations of Imperial China allowed the state to find the best candidates to staff the vast bureaucracy that governed China from the Han Dynasty onwards (206 BCE - 220 CE). The exams...

Nicolaus Copernicus (1473-1543 CE) was a Polish astronomer who famously proposed that the Earth and other planets revolved around the Sun in a heliocentric system and not, as then widely thought, in a geocentric system where...

The Silla kingdom ruled south-eastern Korea during the Three Kingdoms period from the 1st century BCE to 7th century CE. The capital was Geumseong (Gyeongju) with a centralised government and hierarchical system of social ranks. The prosperity...

Ancient Egyptian culture flourished through adherence to tradition and their legal system followed this same paradigm. Basic laws and legal proscriptions were in place in Egypt as early as the Predynastic Period (c. 6000-...

The term science comes from the Latin word scientia, meaning "knowledge". It can be defined as a systematic attempt to discover, by means of observation and reasoning, particular facts about the world, and to establish laws connecting...

Letters and their delivery via a state communication system was a feature of many ancient cultures. The writing medium may have differed but the Mesopotamians, Egyptians, Greeks, Romans, and Incas all had the means...

Philolaus (l. c. 470 to c. 385 BCE) was a Pythagorean philosopher who claimed that fire was the first cause of existence and heat the underlying source of human life. He is best known for his pyrocentric model of the universe, which...

Claudius Ptolemy (c. 100 to c. 170 CE) was an Alexandrian mathematician, astronomer, and geographer. His works survived antiquity and the Middle Ages intact, and his theories, particularly on a geocentric model of the universe...

Mesopotamian science and technology developed during the Uruk period (circa 4000-3100 BCE) and the Early Dynastic period (circa 2900-2350/2334 BCE) of the Sumerian culture of...