Page history
July 28, 2020
→History: Wikify
m+4
→History: Add name to reference
m+15
→Modern definition
+226
→History: Update broken link with a new one
m+175
→Modern definition
m+3
→Modern definition: Add distance must be measured in parsecs
+61
→Modern definition
+4
→Modern definition
mExpand definitions of apparent and absolute magnitudes
+1,365
Expand intro a little
+466