<documents_info>Types of Galaxies,Origin of the Universe,Expansion of the Universe,Formation of Stars,Dark Matter and Dark Energy,Observational Cosmology</documents_info>
<query>Discuss the key features of spiral galaxies according to the given document collection.</query>
user
Algorithm
assistant
<documents_info>Types of Galaxies,Origin of the Universe,Expansion of the Universe,Formation of Stars,Dark Matter and Dark Energy,Observational Cosmology</documents_info>
<query>Discuss the key features of spiral galaxies according to the given document collection.</query>
user
Chunk
assistant
Discuss the key features of spiral galaxies according to the given document collection.
Types of Galaxies,Origin of the Universe,Expansion of the Universe,Formation of Stars,Dark Matter and Dark Energy,Observational Cosmology