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Archimedes
Archimedes (l. 287-212 BCE) was a Greek engineer and inventor who is regarded as the greatest mathematician of antiquity and one the greatest of all time. He is credited with a number of inventions still in use today (such as the Archimedes...

Definition
Aristarchus of Samos
Aristarchus of Samos (l. c. 310 - c. 230 BCE) was a Greek astronomer who first proposed a heliocentric model of the universe in which the sun, not the earth, was at the center. Although his theory was noted by other thinkers of his time...

Definition
Xerxes I
Xerxes I (l. 519-465, r. 486-465 BCE), also known as Xerxes the Great, was the king of the Persian Achaemenid Empire. His official title was Shahanshah which, though usually translated as `emperor', actually means `king of kings'. He is identified...

Definition
Thales of Miletus
Thales of Miletus (l. c. 585 BCE) is regarded as the first Western philosopher and mathematician. He was born and lived in Miletus, a Greek colony in Ionia (modern Turkey) referenced as the birthplace of Greek Philosophy because of his high...

Definition
Nephthys
Nephthys was one of the original five gods of ancient Egypt born of the union of Geb (earth) and Nut (sky) after the creation of the world. She was the fourth born after Osiris, Isis, and Set and was the older sister of Horus (usually referred...

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Tycho Brahe
Tycho Brahe (1546-1601) was a Danish nobleman who made the most significant contribution to our knowledge of astronomy before the telescope arrived. He discovered a supernova, observed the elliptical interplanetary orbit of a comet, updated...

Definition
Battle of Gaugamela
The Battle of Gaugamela (1st October 331 BCE, also known as the Battle of Arbela) was the final meeting between Alexander the Great of Macedon and King Darius III of Persia. After this victory, Alexander was, without question, the King of...

Definition
Nerva
Marcus Cocceius Nerva was Roman emperor from 96 to 98 CE, and his reign brought stability after the turbulent successions of his predecessors. In addition, Nerva helped establish the foundations for a new golden era for Rome which his chosen...

Definition
Dido
Queen Dido (aka Elissa, from Elisha, or Alashiya, her Phoenician name) was a legendary Queen of Tyre in Phoenicia who was forced to flee the city with a loyal band of followers. Sailing west across the Mediterranean she founded the city of...

Definition
Aethelflaed, Lady of the Mercians
Aethelflaed (r. 911-918 CE) was the daughter of King Alfred the Great of Wessex (r. 871-899 CE) and became queen of Mercia following the death of her husband Aethelred, Lord of the Mercians (r. 883-911 CE). She is best known as the “Lady...