| 21. | They may have also been constructed to align with astronomical observations.
|
| 22. | Hubble's pointing system could die any day, halting all astronomical observations.
|
| 23. | Next to the palace the king built a tower for his astronomical observations.
|
| 24. | At this time in the late 19th century, astronomical observations were made without photography.
|
| 25. | Some of the texts containing astronomical observations are extremely obscure.
|
| 26. | At Frombork Copernicus conducted over half of his more than 60 registered astronomical observations.
|
| 27. | Her murder thus was plausibly due to her astronomical observations.
|
| 28. | Ptolemy wrote on the atmospheric refraction of light in the context of astronomical observations.
|
| 29. | She assisted her brother Tycho Brahe with his astronomical observations.
|
| 30. | Predictions of the cold dark matter paradigm are in general agreement with astronomical observations.
|
