Unit, Value Of One Light Year, Light Year Conversion, FAQs - Byju's

How many Light Years Away is the Sun?

The Sun is at a distance of 149.6 million kilometres away from earth. Same distance, when expressed in terms of the light-year approximates 15.54795 × 10-6 light year.

Thus, the Sun is at a distance of 15.54795 × 10-6 light-years from Earth.

Age Of Celestial Body Using Light Year

• Using a light-year as a distance measurement unit has another advantage
• It helps you determine the age!
• Let us consider a star that is 1 million light-years away.
• The light from the star has travelled at the speed of light to reach us.
• Therefore, the star’s light took 1 million years to get to us, and the light we are seeing was illuminated a million years ago.
• So the star that we see is really how the star looked a million years ago, not how it looks today.
• Similarly, our sun is 8 light minutes away.
• If the sun were to suddenly explode right now, we wouldn’t know about it for eight minutes because that is how long it would take for the light of the explosion to get here.

Hope you have learned the value of one light year, along with the value of a light year in various other units.

Physics Related Topics:

Mu Naught Value

Epsilon Naught Value

Relation Between Bar And Pascal

Value Of c

Frequently Asked Questions – FAQs

Q1

What is the velocity at which the light travels?

Light travels at a velocity of about 300,000 kilometres (km) per second.

Q2

At what distance is the sun from the earth?

The Sun is 149.6 million kilometres away from the Earth.

Q3

What is the value of one light year when expressed in kilometres?

One light year = 9.4607 × 10^12 km.

Q4

Can the age of the celestial body be determined using a light year?

Yes. Q5

What is the value of one light year in Astronomical unit

One light-year is the Astronomical unit = 63241 au.

Stay tuned with BYJU’S for more such interesting articles. Also, register to “BYJU’S-The Learning App” for loads of interactive, engaging physics-related videos and unlimited academic assistance.

Test Your Knowledge On Value Of One Light Year! Q5

Put your understanding of this concept to test by answering a few MCQs. Click ‘Start Quiz’ to begin!

Select the correct answer and click on the “Finish” buttonCheck your score and answers at the end of the quiz

Start Quiz

Congrats!

Visit BYJU’S for all Physics related queries and study materials

Your result is as below

0 out of 0 arewrong 0 out of 0 are correct 0 out of 0 are Unattempted View Quiz Answers and Analysis X Login To View Results Mobile Number* Send OTP Did not receive OTP?

Request OTP on Voice Call

Login To View Results Name* Email ID* Grade* Grade 1 2 3 4 5 6 7 8 9 10 11 12 City* View Result

Comments

Leave a Comment Cancel reply

Your Mobile number and Email id will not be published. Required fields are marked *

* Send OTP Did not receive OTP?

Request OTP on Voice Call

* * Post My Comment