The journey of astronomical telescopes began in the early 17th century when Galileo Galilei crafted his first refracting ...

His theory of optics made him reconsider the design of the telescope, which up until this point was a large, cumbersome instrument. By using mirrors instead of lenses, Newton was able to create a ...

All Records (Accepted, Rejected, Pending). To filter/search please enter a phrase. E.g. To filter Rejected records, type Rejected into the Search box, all columns can be filtered.