Star chart
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A star chart is a celestial map of the night sky with astronomical objects laid out on a grid system. They are used to identify and locate constellations, stars, nebulae, galaxies, and planets. They h
Farnese Atlas at the Museo Archeologico Nazionale, Naples
Hevelius – Firmamentum Sobiescianum sive Uranographia 1690
Constellation
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A constellation is an area on the celestial sphere in which a group of visible stars forms a perceived pattern or outline, typically representing an animal, mythological subject, or inanimate object.
Star chart
…A star chart is a celestial map of the night sky with astronomical objects laid out on a grid system. They are used to identify and locate constellations, stars, nebulae, galaxies, and planets. They have been used for human navigation since time immemorial. Note that a star chart differs from an astronomical…
The relationship of the Earth's tilt to the Sun's apparent path governs how the zodiac will be orientated overnight.
Babylonian tablet recording Halley's Comet in 164 BC
Egyptian star chart and decanal clock, from the ceiling of Senenmut's tomb, c. 1473 BC
The Milky Way as seen from Earth, with prominent dark features labeled in white, as well as prominent star clouds labeled in black. Below center left are the Large and Small Magellanic Clouds. The star-like objects are globular clusters of the Milky Way.