GK
WORLD GEOGRAPHY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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speed of satellites
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speed of ships
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distance between bodies in the universe
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speed of rockets
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Detailed explanation-1: -The term light-year is often used in astrophysics to measure the distance between two astronomical objects. Light travels at a velocity of about 300, 000 kilometres (km) per second. It can travel about 10 trillion km. More precisely, one light-year is equal to 9, 500, 000, 000, 000 kilometres.
Detailed explanation-2: -Astronomical units, abbreviated AU, are a useful unit of measure within our solar system. One AU is the distance from the Sun to Earth’s orbit, which is about 93 million miles (150 million kilometers).
Detailed explanation-3: -It takes billions of years for light from galaxies very far away to reach us–this light started towards Earth when the Universe itself was still young. This is why we measure enormous distances in space by comparing them to how long it would take light to “go the distance."
Detailed explanation-4: -Large distances between celestial bodies are expressed in a unit known as light year. It is the distance travelled by light in one year.