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.
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?
Where I live it is pretty common to see "shooting stars" -- streaks of light in the sky at night. How big is a shooting star? Do they land on earth or do they burn up? Do they land on the ground as meteorites?