Why did some planets remain undiscovered until the telescope was invented please help me​

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.

Explanation:

Detailed observations of the planet became possible with the invention of telescopes, and in 1610 Galileo saw its rings for the first time, although he mistakenly believed them to be moons. In 1659, Christiaan Huygens using a more powerful telescope realized what was really being seen, and soon after discovered the planet’s first moon, Titan.

Explanation:

different strategies reach different people based on their ability to understand the material. (from personal experience) when writing an argumentative essay write explaining the subject as though your audience never heard of it before and it is just being introduced, then explain why other people hate it also, afterward you would explain why that would be wrong. i hope that : )

can you give us the options