|The Milky Way is a barred ____ galaxy.
|Stars, planets, and comets are ____ objects.
|Earth rotates about ____ times per orbit around the Sun.
|The distance between the Earth and Sun is one ____ unit.
|Mercury, Venus, Earth, and Mars are ____ (rocky) planets.
|Cosmological redshift suggests that the Universe is ____.
|Saturn is the ____ planet from the Sun.
|Both Jupiter and Saturn have more than ____ moons.