Question

who developed the telescope in 1609 ?​

Answer 1

Galileo

Galileo and the Telescope. The invention of the telescope played an important role in advancing our understanding of Earth's place in the cosmos. While there is evidence that the principals of telescopes were known in the late 16th century, the first telescopes were created in the Netherlands in 1608.

Answer 2

Galileo Galilei invented the telescope in 1608.