|The largest of Jupiter's moons is ____.
|The largest mountain on Mars is ____.
|Crewless ____ (orbiters, landers, rovers) have been sent to Mars.
|The ____ is an area in the sky that includes 12 constellations.
|Most dwarf planets are located within the ____ belt.
|Saturn is the ____ planet from the Sun.
|A ____ is an interstellar cloud of dust and hydrogen gas.
|The tail of a ____ always points away from the Sun.