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The instrument used to view distant objects such as stars and planets is called?
A. Microscope
B. Telescope
C. Periscope
D. Barometer
Correct Answer Is Option = Telescope
Notes / Explanation
The instrument used to view distant objects such as stars and planets is called a telescope, and it is one of the most important inventions in the history of science, particularly in the study of the heavens. Objects in the sky, such as the Moon, the planets, the stars and other heavenly bodies, are located at enormous distances from the Earth, and although some of them can be seen with the naked eye, they appear only as small points or faint shapes, and most of the details of their surfaces and many fainter objects cannot be seen without assistance. The telescope was developed to overcome this limitation by gathering and focusing the light coming from distant objects so that they appear larger, brighter and clearer, allowing them to be studied in much greater detail. A telescope works by using lenses or mirrors to collect light from a distant object over a large area and to bring that light to a focus, producing a magnified image that reveals features that would otherwise be invisible. The invention of the telescope transformed the understanding of the universe. When early scientists first turned a telescope towards the sky, they made a series of remarkable discoveries that changed the way people thought about the heavens and the position of the Earth within them. They observed that the Moon had mountains and craters, that certain planets had moons of their own circling around them, and that there were far more stars in the sky than could ever be seen with the naked eye. These discoveries provided powerful evidence in support of new ideas about the structure of the solar system and the place of the Earth within it. Over the centuries, telescopes have grown enormously in size and power, and modern telescopes are capable of seeing objects that are incredibly faint and unimaginably far away. Some advanced telescopes are even placed above the atmosphere of the Earth, where they can obtain exceptionally clear views of the universe, free from the distortion caused by the air. Telescopes have allowed astronomers to explore distant galaxies, to study the life cycles of stars and to investigate the origins and structure of the universe. For PPSC and other competitive examinations, the key points to remember are that a telescope is used to view distant objects such as stars and planets, that it works by using lenses or mirrors to gather and focus light, and that its invention led to major discoveries about the Moon, the planets and the structure of the universe.
