# GENERAL KNOWLEDGE

## GK

### THE UNIVERSE

 Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Light years are used by astronomers to measure what property of celestial bodies?
 A Distance from Earth B Time since formation C Internal temperature D Absolute brightness
Explanation:

Detailed explanation-1: -Light travels at 186, 000 miles or 300, 000 kilometres per second in an empty space. To give you a simple idea of how fast this is, light can travel around the Earth seven times in just one second! Astronomers use the speed of light to determine how far away objects are in space.

Detailed explanation-2: -The distance traveled by light in one year. This unit is used to measure distances in space. Light travels 300, 000 km, equivalent to seven and a half laps around the Earth, in one second. Therefore, the distance traveled by light in one year is approximately 9.4605 trillion km.

Detailed explanation-3: -Astronomical unit and light year are the units used to measure the distance between celestial objects.

There is 1 question to complete.