| The Milky Way is a barred ____ galaxy. |
365 |
| Stars, planets, and comets are ____ objects. |
60 |
| Earth rotates about ____ times per orbit around the Sun. |
astronomical |
| The distance between the Earth and Sun is one ____ unit. |
celestial |
| Mercury, Venus, Earth, and Mars are ____ (rocky) planets. |
expanding |
| Cosmological redshift suggests that the Universe is ____. |
sixth |
| Saturn is the ____ planet from the Sun. |
spiral |
| Both Jupiter and Saturn have more than ____ moons. |
terrestrial |
