Astronomy is a natural science that studies celestial objects and the phenomena that occur in the cosmos. It uses mathematics, physics, and chemistry to explain their origin and their overall evolutio
Megaliths from Nabta Playa, constructed by Neolithic populations, located in Aswan, Upper Egypt.
The Nebra sky disc found on Mittenberg hill in Germany and dated to c. 1800–1600 BCE.
A Babylonian planisphere (7th century BCE) was an early astronomical instrument. Its use of sexagesimals (e.g. 12, 24, 60, 360) is still being used today through having been broadly adopted for timekeeping and astrometry.
Portrait of Alfraganus in the Compilatio astronomica, 1493. Islamic astronomers collected and translated Indian, Persian and Greek texts, adding their own work.
An astronomer is a scientist in the field of astronomy who focuses on a specific question or field outside the scope of Earth. Astronomers study astronomical objects, such as stars, planets, moons, co
Astronomy
…may use "astronomy" and "astrophysics" according to whether the department is historically affiliated with a physics department, and many professional astronomers have physics rather than astronomy degrees. Thus, in modern use, the two terms are often used interchangeably. The initial development of astronomy was…
A voting session is conducted in 2006 International Astronomical Union's general assembly for determining a new definition of a planet
Galileo Galilei is often referred to as the father of modern astronomy. Portrait by Justus Sustermans.
Johannes Kepler, one of the fathers of modern astronomy