Aristarchus of Samos: Ancient Proponent of a Sun‑Centered Cosmos Aristarchus of Samos Aristarchus of Samos (c.310–c.230 BC) was an ancient Greek astronomer and mathematician who proposed an early heliocentric model and estimated relative sizes and distances of the S…
Caesar's Comet (Comet C/-43 K1) Caesar's Comet Bright non‑periodic comet observed in 44 BC and widely read by Romans as a sign of Julius Caesar's deification; notable for exceptional brightness and a parabolic orbit.
