1 The government seems willing to spend astronomical sums on weapons development.
2 The photosphere of an astronomical object is the region from which externally received light comes.
3 Light - year is an astronomical unit.
4 He was an expert on ancient Chinese astronomical literature.
5 Early astronomers thought that our planet was the centre of the universe.
6 It is good to recall that astronomers cover only a tiny fraction of the sky at any time.
7 No meteor shower is more spectacular than the annual Perseid showers which astronomers consider one of the most rewarding sky watching events of the year.
8 He felt much as an astronomer feels who has discovered a new planet -- no doubt, as far as strong, deep, unalloyed pleasure is concerned.
9 He felt much as an astronomer feels who has discovered a new planet -- no doubt, as far as strong, deep, unalloyed pleasure is concerned, the advantage was with the boy, not the astronomer.
10 He felt much as an astronomer feels who has discovered a new planet--no doubt, as far as strong, deep, unalloyed pleasure is concerned.
11 An astronomer can determine the brightness of each star.
12 A new star attracted the notice of the astronomer.