In response, the mid-17th-century astronomers made a determined effort to bring the subject of astrology up to date.

In recent years, amateur astronomers have made some notable Cygnus discoveries.

The astronomer had made his point, if not directly, then at least with a certain grave subtlety.

I didn't have to; others were already doing so, especially Sigfrid and the astronomers, all of whom were telling him he was making a mistake.

There had always been the thought in his mind: What if the astronomers of Kulath have made a mistake?

Although the two types of diagrams are similar, astronomers make a sharp distinction between the two.

Over the last 100 years, many local amateur and professional astronomers have made use of the telescope.

While the redheaded astronomer took samples and made observations, Haines kept watch.

"Any competent astronomer can make the necessary observations and testify."

In the next decades the astronomers made their star charts, but the navigation problem remained unsolved.