Seleucus (or Seleukos) of Seleucia (born circa 190 BC - ?) was a Greek philosopher. Centuries: 3rd century BC - 2nd century BC - 1st century BC Decades: 240s BC 230s BC 220s BC 210s BC 200s BC - 190s BC - 180s BC 170s BC 160s BC 150s BC 140s BC Years: 195 BC 194 BC 193 BC 192 BC 191 BC - 190 BC - 189 BC 188 BC... A philosopher is a person who thinks deeply regarding people, society, the world, and/or the universe. ...

He born in Seleucia on the Tigris in Babylonia. Teaching around 150 BC, he was the only known philosopher of his time to agree with the heliocentric theory of Aristarchus of Samos, which stated that the Earth rotated around its own axis which in turn revolved around the Sun. He also correctly theorized that tides were caused by the Moon, although he believed that the interaction was mediated by the Earth's atmosphere. He noted that the tides varied in time and strength in different parts of the world. The name Seleucia may denote any one of several cities in the Seleucid Empire. ... Babylonia, named for its capital city, Babylon, was an ancient state in the south part of Mesopotamia (in modern Iraq), combining the territories of Sumer and Akkad. ... Centuries: 3rd century BC - 2nd century BC - 1st century BC Decades: 200s BC 190s BC 180s BC 170s BC 160s BC - 150s BC - 140s BC 130s BC 120s BC 110s BC 100s BC Years: 155 BC 154 BC 153 BC 152 BC 151 BC - 150 BC - 149 BC 148 BC... In astronomy, heliocentrism is the theory that the Sun is at the center of the Universe and/or the Solar System. ... Statue of Aristarchus at Aristoteles University in Thessaloniki, Greece Aristarchus (310 BC - c. ... The Sun is the spectral type G2V yellow star at the center of Earths solar system. ... The tide is the regular rising and falling of the oceans surface caused by changes in gravitational forces external to the Earth. ... Bulk composition of the moons mantle and crust estimated, weight percent Oxygen 42. ... Layers of Atmosphere (NOAA) Earths atmosphere is a layer of gases surrounding the planet Earth and retained by the Earths gravity. ...

Seleucus is known from the writings of Plutarch. Plutarch Mestrius Plutarchus (c. ...