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Astronomy is one of the oldest of the natural sciences. The early civilizations in recorded history, such as the Babylonians, Greeks, Indians, Egyptians, Nubians, Iranians, Chinese, Maya, and many ancient indigenous peoples of the Americas, performed methodical observations of the night sky. Historically, astronomy has included disciplines as diverse as astrometry, celestial navigation, observational astronomy, and the making of calendars, but professional astronomy is now often considered to be synonymous with astrophysics.

Last Update March 24 2019

Quote of the Day

Mathematics became an experimental subject. Individuals could follow previously intractable problems by simply watching what happened when they were programmed into a personal computer. ... The PC revolution has made science more visual and more immediate ... by creating films of imaginary experiences of mathematical worlds. ... Words are no longer enough.
John D. Barrow, Cosmic Imagery: Key Images in the History of Science (2008).