Starlight is your guide. No vacuum will contain you.
Definition/Summary:
Nighthawk
- Predatory bird, Hunts at nightfall or during long periods of darkness.
Celestial
- Angels, philosophy and astronomy
The celestial sphere is used to map the contents of space related to a solar system. Concentric spheres place celestial bodies within one another to show proximity and plot course as well as proximity.
The heavens and the Vacuum of space to which light is contained.
Expanded info:
Stars are used to navigate ships at sea through the darkness