Memorie della Società Astronomica Italiana vol:77 pages:498-501
Stellar Pulsation and Evolution location:Frascati, Italy date:19-24 June 2005
Almost a century after its discovery the Blazhko effect in RR Lyrae stars remains a mystery. The Blazhko Project is an international collaboration focusing at a better understanding of the phenomenon. In this short paper we summarize some of the results obtained so far, and point out some of the remaining challenges.