File:Phase_angle_explanation.png · Wikimedia Commons · See Wikimedia Commons
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logarithmic measure of the luminosity of a celestial object
AI overview
Absolute magnitude is a way of measuring how bright a star or other object in space actually is, using a logarithmic scale that lets astronomers compare objects that are vastly different distances away. It matters because it reveals the true power of celestial objects independent of how far they are from Earth, helping scientists understand what they're really looking at in the universe.
AI-generated from the Wikipedia summary — may contain errors.