Why distance of light is important?

Answer 1

Basically parallax, parallel axis, is the angle between two lines of sight. When you focus two eyes on something, your eyes are each looking slightly away from straight ahead. That is the parallax angle. So the farther away something is, the less the parallax angle. It is used in astronomy when a distant object is sighted and then sighted again half a year apart, we know that the earth has moved 2 AU in space, on the opposite side of the sun, and the angle from a fixed reference will provide a parallax angle which can then be used to relate the distance by trigonometry.

Answer 2

Because the area that the light illuminate gets wider the further it is from the source, the wider that area the dimmer the light will seem because it is still the same amount of light but in a bigger area

Answer 3

The distance light travels is important because it is used to measure vast astronomical distances in space and to determine the age of the universe. By studying the speed of light and how it travels through space, scientists can gain insights into the expansion of the universe and the nature of cosmic objects. Additionally, the distance light travels is crucial for understanding the fundamental properties of light and its interactions with matter.

Answer 4

the shorter the distance , the brighter the light

Answer 5

Gravity is a very tricky thing but yes it does affect light. If path of light happens to pass by a VERY big planet the planets strong gravitational field will redirect the path of light.

Answer 6

It's how we measure how far away the stars and other planets are in space. Without it we would have to measure the distance in miles.

Answer 7

Light travels at a constant speed. Therefore the farther away a star is, the longer it takes for light to reach us.

Answer 8

coz they are..... they just are.....