A spy glass (telescope).
In this sentence, "In 1609" and "Galileo" would be classified as a time period and a proper noun, respectively.
Note that Galileo did not invent the telescope. He was, however, the first person to use a telescope to examine the heavens. Previously, telescopes had only been used to look at distant locations here on Earth.
It was Galileo Galilei who first observed that the moon is not smooth through his telescopic observations in 1609. He noted that the moon's surface is marked by mountains, craters, and other features, contradicting the common belief at the time that the moon was a perfectly smooth object.
In 1609, Galileo Galilei made significant advancements in astronomy by using a telescope to observe the Moon, marking the first time anyone had done so. His observations revealed the Moon's surface to be rugged and uneven, contrary to the prevailing belief that celestial bodies were smooth and perfect. Galileo's meticulous sketches and findings challenged existing astronomical theories and laid the groundwork for modern observational astronomy. This pivotal moment not only enhanced our understanding of the Moon but also shifted the perspective on the universe as a whole.
Galileo looked at the planet Jupiter and observed its 4 largest moons (which are still known as the Galilean moons, to this day).
Galileo discovered that between the moons night and day sides the top was sometimes irregular and sometimes the bottom was smooth. He realized the irregularities were because the mountains on the moon.
Galileo used and made the first telescope.
Galileo discovered Jupiter's four largest moons, including Io, Europa, Ganymede, and Callisto, in 1610. He observed them using a telescope, marking the first time celestial bodies were discovered that did not orbit Earth.
Galileo was probably the first scientist to use a telescope.Telescopes were invented about 1608 by spectacle makers in the Netherlands. Galileo used one for astronomy the following year.Galileo .
Io was known long before the time of NASA. It was discovered by Galileo Galilei in 1610.
Earth's shadow on the moon proved that earth wasn't flat. When galileo first turned his telescope to the moon, he found a surface scarred by craters and maria. Before that time, many people believed that all planetary bodies were "perfect" without surface features.
The best time to look at the super moon is when it is rising or setting, typically in the evening or early morning.