probably the moon
some one once looked in a telescope and found a planet
There is some dispute about exactly who invented the telescope, but it appears to have happened in the Netherlands in the early 1600s.
Depending on the power of the telescope... anything from ships, planes, coastal scenery and wildlife... to - the moon, stars and galaxies.
The Gregorian refracting telescope was invented by Scottish mathematician and astronomer James Gregory in the 17th century. He designed this telescope to address some of the optical issues of the existing telescopes at that time.
some man that had money and eggs
Some say it was Hans Lippershey, a Dutch optician, in 1608. But Galileo was thew first to turn the telescope to the skies and use it for astronomical purposes.
The Multiple Mirror Telescope (MMT) was the first telescope to use a honeycomb pattern of smaller mirrors to create the effect of a larger mirror. This design helped to minimize some of the difficulties associated with manufacturing and maintaining large, single-piece mirrors.
The telescope was improved by several astronomers and inventors over time. Some key figures include Galileo Galilei, who made significant advancements in telescope design in the 17th century, and Hans Lippershey, who is often credited with inventing the first practical telescope in the early 1600s.
Newton invented the reflecting telescope which is a a great advance over the refracting telescope. The refracting telescope distorted the image via refraction. Newton invented Calculus, which is the engine of mathematics. Newton invented lens and prisms for light analysis.
Galileo was the first scientist to see the features of the moon. He did this in 1609 by using an early version of the telescope. Galileo was able to make out some of the pits and mountains on the moon.
The first pictures taken by the Hubble Space Telescope were released on April 25, 1990. These initial images showcased the telescope's capabilities and included a wide-field view of the planet and its surroundings. Despite some initial issues with the telescope's optics, subsequent adjustments led to stunning and groundbreaking astronomical observations.
I am sure he has looked through a telescope at some time and of cause he can look up at the night sky. However most of what the does in relation to cosmology is done using maths and equations in his head.