Answer:

nebular

AnswerCrossword Clue
NEBULAROf cosmic clouds
NEBULARLike some celestial clouds
NEBULAROf gaseous celestial structures.
NEBULAR... hypothesis of Laplace.
NEBULARGalactic.
NEBULARResembling the Milky Way.
NEBULAROf cosmic groups.
NEBULARCloudy.
NEBULAROf galaxies
NEBULAROf a galaxy
NEBULARCloudy
NEBULAROf interstellar clouds