GK
WORLD HISTORY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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first telescope
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first satellite
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first microscope
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world map
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Detailed explanation-1: -In 1609, using this early version of the telescope, Galileo became the first person to record observations of the sky made with the help of a telescope. He soon made his first astronomical discovery.
Detailed explanation-2: -In a very short time, Galileo discovered Jupiter’s four largest moons-Io, Europa, Ganymede, and Callisto, now called the Galilean moons. Each moon has unique characteristics that make it stand out in the solar system. For example, Io is the most volcanically active object in the solar system.
Detailed explanation-3: -Galileo was the first astronomer to use the newly invented telescope to make astronomical observations. He discovered the four largest moons of Jupiter, craters and mountains on the Moon, and sunspots, and was the first to see that the Milky Way consists of a myriad of individual stars.