The Quiz: Which planet has only two moons, Phobos and Deimos?
Mercury
Venus
Uranus
Mars
Keeping with the Roman theme, scientists named the two moons of Mars “Phobos” (meaning “fear”) and “Deimos” (meaning “dread”). Mars was named for the Roman god of war, and Phobos and Deimos were his sons, according to myth. These moons are among the smallest in the solar system. Deimos takes about 30 hours to complete one orbit of Mars, while Phobos is much closer, completing a full orbit around three times a day. Phobos is slowly spiraling closer to Mars — in about 50 million years, it will crash into the surface of the planet.
The correct answer to this quiz is Mars.