This is the 13972nd most frequent German word.
galaktische
"Galaktische" means "galactic" in English.
The word "galaktische" is used as an adjective describing "Nebel," indicating that the nebula pertains to a galaxy or galaxies.
Der galaktische Nebel leuchtete am Nachthimmel.
The galactic nebula shone in the night sky.
Again, "galaktische" modifies "Schönheit," attributing it characteristics associated with galaxies, in this case marveling at the scale and aesthetics.
Wir bewunderten die galaktische Schönheit der Milchstraße.
We admired the galactic beauty of the Milky Way.
Here, "galaktischen" refers to the "Zentrum," or center, attributing it to something within a galaxy, especially the focal region of interest in astronomical studies.