What is a Satellite Assembly?

[chinmay.sahoo]

Satellite assemblies contain resource files corresponding to a locale (Culture + Language) and these assemblies are used in deploying an application globally for different languages.

[TomClarke]

A satellite assembly is a .NET Framework assembly containing resources specific to a given language. Using satellite assemblies, we can place resources for different languages in different assemblies. When you write a multilingual or multi-cultural application in .NET, and want to distribute the core application separately from the localized modules, the localized assemblies thta modify the core application are called satellite assemblies.