Astronomy as a Science in Need of a Tool
Before the telescope, astronomy was a floundering science. It had moved as far as it could, based upon sightings made with the naked eye. There were many deductions that could be made using sightings and timings, but there was no doubt the field was in need of a tool, which was not going to be available until 1600. Before this date, many speculations and calculations were made that would be added to or nullified when telescopes finally became available.