| 1. | The principles of astronomical perspective. - from The Notebooks of Leonardo Da Vinci, Complete by Leonardo Da Vinci |
| 2. | Few of the common people in England had anything but the vaguest astronomical ideas in those days. - from The War of the Worlds by H. G. Wells |
| 3. | As Mars approached opposition, Lavelle of Java set the wires of the astronomical exchange palpitating with the amazing intelligence of a huge outbreak of incandescent gas upon the planet. - from The War of the Worlds by H. G. Wells |
| 4. | Leonardo also refers to the science of the eye, in his astronomical researches, for instance in MS. - from The Notebooks of Leonardo Da Vinci, Complete by Leonardo Da Vinci |
| 5. | Tables Toletanes Toledan tables the astronomical tables composed by order Of Alphonso II, King of Castile, abou. - from The Canterbury Tales by Geoffrey Chaucer |
| 6. | _Before the discovery of the telescope accurate astronomical observations were only possible to a very limited extent. - from The Notebooks of Leonardo Da Vinci, Complete by Leonardo Da Vinci |
| 7. | In the passages here printed, a connected view is given of his astronomical studies as they lie scattered through the manuscripts, which have come down to us. - from The Notebooks of Leonardo Da Vinci, Complete by Leonardo Da Vinci |