The AAVSO blog features astronomical stories of particular interest to variable star aficionados. Blog posts might cover breaking news, historical anniversaries, internal project updates, and other subjects germane to our membership. Feedback is welcome: write to our organization's inbox to have your say!


Star Light, Star Bright

December 19, 2023 | By Tim Lyster and George Silvis

How backyard observers can help unlock the secrets of supernovae.


Cleaning Up VSD

November 16, 2023 | By Sebastián Otero & Tim Lyster

Inconsistencies in the WBVR catalog magnitudes adopted in the Variable Star Database were causing issues for our observers. A major clean-up was in order.


Shattering Shapley’s Universe

October 6, 2023 | By Tim Lyster

A century ago, Edwin Hubble’s photographic observations of a Cepheid variable settled the vexing question of the day: Our Milky Way is not the entire universe.