While the telescope is often attributed to Galileo Galilei, the truth is a bit more nuanced. While Galileo did improve upon existing designs and popularized its use for astronomical observations, he was not the first to invent it.

Here's a breakdown:

* Hans Lippershey, a Dutch spectacle maker, is credited with applying for the first patent for a telescope in 1608.

* Zacharias Janssen, another Dutch spectacle maker, is also claimed to have invented the telescope around the same time. However, there is no surviving evidence to support this claim.

* Galileo Galilei, upon hearing about Lippershey's invention, quickly developed his own version in 1609. He made significant improvements, increasing magnification and clarity, and used it to revolutionize astronomy.

So, while Lippershey is generally credited with the first working telescope, it's important to acknowledge the contributions of both Janssen and Galileo in the early development and popularization of this revolutionary invention.