| 1 | And we can network between domes and classrooms. | |
| 2 | They constitute our cultural firmament, the constellation of our stars. | |
| 3 | In medieval times, poets often called the sky "the vault of heaven". | |
| 4 | The sky or universe as seen from Earth; the firmament. | |
| 5 | Overhead was a blue sky with fluffy white clouds. |
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