from typing import List
from typing import Tuple
from typing import Set


def unique_planets(orbits: List[Tuple[str, str]]) -> Set[str]:
    """Get the unique list of planets from all of the orbits."""
    planets: Set[str] = set()
    planets.update([x[0] for x in orbits])
    planets.update([x[1] for x in orbits])
    return planets