Concept
Absolute Magnitude
Intrinsic brightness on a standard scale.
The apparent magnitude an object would have if placed 10 parsecs (32.6 light years) away, allowing direct comparison of intrinsic luminosities.
Overview
The apparent magnitude an object would have if placed 10 parsecs (32.6 light years) away, allowing direct comparison of intrinsic luminosities.
See also
Apparent & Absolute Magnitude
How astronomers measure brightness.
Baryon Acoustic Oscillations
A standard ruler frozen into the early universe.
Universal Time
The world's astronomical timescale.
Bolometric Magnitude
Brightness across all wavelengths.
The Big Bang
How everything began, 13.8 billion years ago.
Black Holes
Regions where gravity stops light itself.