| The Big Bang occurred about ____ billion years ago. |
4 |
| The nearest star to the Sun is about ____ light-years away. |
8 |
| Neptune is about ____ astronomical units away from the Sun. |
14 |
| Light from the Sun reaches the Earth in about ____ minutes. |
30 |
| Earth rotates about ____ times per orbit around the Sun. |
60 |
| Both Jupiter and Saturn have about ____ moons. |
365 |
| The Moon is about ____ miles from the Earth. |
1969 |
| Humans first walked on the Moon in July ____. |
239,000 |
