Answer | Crossword Clue |
---|---|
exoplanets | EXOPLANET, a planet that orbits a star in another solar system |
exoplanet | a planet that orbits a star in another solar system |
retrogradation | The orbiting or rotation of a planet or planetary satellite in a reverse direction from that normal in the solar system |
CERES | Body in our solar system that was considered a planet in the first half of the 19th century |