Thanks to all of our generous donors - WE MADE IT!
We not only met our Annual Campaign goal, but exceeded it by more than $1000.00.
THANK YOU to everyone who contributed.
Your continuing support makes it possible for the AAVSO to continue providing the data, tools and services scientists, educators, students, observers and the public rely on.
Friedrich Wilhelm August Argelander is generally considered the father of variable star astronomy. He was the first astronomer to begin a careful study of variable stars. At the time, only a handful of variables were known, and he was responsible for introducing the modern system of naming them using the capital letters R-Z.