Advertisements
Advertisements
प्रश्न
Why is the distance between stars expressed in light years? What do you understand by the statement that a star is eight light years away from the Earth?
Advertisements
उत्तर
The distance of the stars from the Earth and the distance between the stars are very large. It is inconvenient to express these distances in kilometer (km). Thus, these large distances are expressed in light years. One light year is the distance travelled by light in one year. One light year is equal to 9.46 × 1012 km.
A star is located eight light years away from the Earth. This means that the distance between the star and the Earth is equivalent to the distance travelled by light in eight years, i.e., a star is located 8 × (9.46 × 1012) = 7.6 × 1013 km away from the Earth.
APPEARS IN
संबंधित प्रश्न
Fill in the blanks:
Shooting stars are actually not _________.
Mark the following statement as true (T) or false (F).
Pole star is a member of the solar system. ( )
Do all the stars in the sky move? Explain.
Write a paragraph on the birth and lifecycle of stars using figure.
Morning star is the name given to
What is a star? What is its composition and how was it formed?
Stars are built by ____ gases.
We can see nearly ______ stars with the naked eye in the dark night.
The brightness of stars depends on their ______ and ______ from the earth.
The temperature of the star is determined by ______.
