Galactic (adjective)

1. Of or relating to a galaxy or galaxies.
2. Very large or extensive; relating to the vastness of space.

Origin:

From the latin word 'galaxias' meaning 'milky', referring to the milky way galaxy.

Examples:

1. The galactic center of the Milky Way is home to a massive black hole.
2. The galactic survey revealed thousands of new stars and planets.
3. The galactic empire ruled over countless star systems and civilizations.
4. The galactic collision between two spiral galaxies created a beautiful and unusual celestial phenomenon.
5. The galactic supercluster is a vast group of galaxies bound together by gravitational forces.