Concept
Declination
Celestial latitude, measured in degrees.
The angular distance of an object north (+) or south (−) of the celestial equator, ranging from −90° to +90°.
Overview
The angular distance of an object north (+) or south (−) of the celestial equator, ranging from −90° to +90°.
See also
Right Ascension
Celestial longitude, measured eastward in hours.
Sidereal Time
Time measured by the stars rather than the Sun.
Solar Time
Time measured by the Sun's position.
Epoch (Astronomy)
A reference instant for celestial coordinates.
The Big Bang
How everything began, 13.8 billion years ago.
Black Holes
Regions where gravity stops light itself.