The Keenan–Barger–Cowie supervoid is 1.8 billion lightyears across and, although not technically empty, it is curiously less densely populated than the rest of the universe.
Your prompt is SUPERVOID.
This void, vast, empty
Where we dance, orbit alone
Getting lonelier
The Milky Way Galaxy sits right in the middle of it, and it seems that within this void, the universe is expanding faster, leaving the Milky Way alone in the cold.
So nice to get away
from the crowds, the hoi polloi -
I've got just the place in mind
Super void is a sign in space race.
A detour caution to travel around
Milky Way violent explosions- implosions.