Erscheinung

noun
  1. A phenomenon or appearance, especially one that is unusual or remarkable. noun
    The Northern Lights are a breathtaking Erscheinung in the night sky.
    The sudden appearance of the comet was an unexpected Erscheinung for the astronomers.
  2. An apparition or ghostly figure, often perceived as a supernatural occurrence. noun
    The old mansion was rumored to be haunted by an Erscheinung that appeared at midnight.
    She claimed to have seen an Erscheinung in the hallway, which left her feeling unsettled.