Aurora Expanse
From Starsonata Wiki
The Aurora Expanse is a galaxy that is part of the Arctia chain and is between Arctia, Boreal Glacier & Aurora Peak, this galaxy acts as the interchange between the two bosses, Lord Borean & Lady Aurora. This galaxy contains Ice Shards, Frost Shards and Rime Shards.
Because the asteroids in the galaxy are ice, a heat weapon is required to break them, the asteroids contain Metals, Silicon & Fermium.