Cygnus, a constellation that lies in the Milky Way between Lyra and Pegasus. It contains the first-magnitude star Deneb. Deneb and four other stars within the constellation form the Northern Cross. Cygnus is named for a character in Greek mythology who was turned into a swan and placed in the heavens by the god Apollo.
The only thing that's lurking in the shadows during a lunar eclipse is the moon. When Earth's shadow blocks sunlight from directly illuminating a full moon, you're witnessing a lunar eclipse.
They exist in the netherworld between solar systems. Sometimes they arise after being ejected from their orbits, endlessly roaming the Milky Way. Could a nomad planet ever wander a little too close?