The Galaxies are spread over vast distances, which are measured in _____.
Show answer & explanation
Correct answer: A
Explanation
Correct Answer:
Option 1 (Light Year)
Explanation:
Galaxies and other celestial bodies are located at extremely large distances from each other. It is not practical to measure these distances in conventional units like kilometers or meters, so they are measured in light years. A light year is the distance light travels in a vacuum in one year.
Additional Facts:
Value of Distance: 1 light year is approximately equal to a kilometer.
Parsec: This is the largest unit of measurement of astronomical distance. 1 parsec = 3.26 light years.
Astronomical Unit (AU): The average distance between the Earth and the Sun is called an astronomical unit.
Speed of Light: The speed of light is approximately 300,000 kilometers per second.
Possible Questions for the Upcoming Exam:
What is the largest unit of measurement of distance? (Answer: Parsec)
How long does it take sunlight to reach Earth? (Answer: About 8 minutes 20 seconds)
Which galaxy is the closest to our Milky Way? (Answer: Andromeda)