nebulosa

noun
  1. A term used in astronomy to refer to a nebula, which is a cloud of gas and dust in outer space, visible in the night sky either as an indistinct bright patch or as a dark silhouette against other luminous matter. noun
    The Orion Nebula is one of the most studied nebulosa in the night sky.
    Astronomers observed the formation of new stars within the nebulosa.
  2. In a figurative sense, it can refer to something that is vague, unclear, or ill-defined. noun
    The details of the plan remained a nebulosa, leaving everyone confused.
    His explanation was a nebulosa, lacking clarity and precision.