Solutions Danish astronomer who measured the positions of stars and motions of planets and comets with unprecedented precision has 3 entries with similar clues
- 7-letter words
- synodicRelating to alignment of stars and planets
- 13-letter words
- edmond-halleyEnglish astronomer noted for his work on comets
- 23-letter words
- niels-henrik-david-bohrDanish physicist and pioneer in quantum physics whose theory of the structure of atom incorporated quantum theory for the first time