Light Year is a unit of Distance.
Light Year is defined as the distance traveled by light in one year.
Generally in our day to day life we use centimetre, metre, kilometre, mile, inch, foot etc. to measure distance between two points.
But in astronomy or space science to measure distance between astronomical objects like planets, stars and between galaxies these units are not suitable, hence Light Year is used.
1 Light Year = 9.4607×1012 km
•Light travels at the rate of 3×108 m/sec in vacuum.
•Light travels at the rate of 2.2×108 m/sec in water.
•Light travels at the rate of 2×108 m/sec in glass.
DO YOU KNOW?
•Milky Way galaxy is about 1,000,000,000,000,000,000 km (about 100,000 light years).
There are billions of galaxy in the observable universe.
•Nearest galaxy to our Milky Way galaxy is Andromeda Galaxy which is 2.3 million light years away.
Just imagine how long the distance is and how big our universe.
•The radius of observable universe is 46.508 billion light years.
Think how our science has developed that we can study the planets,stars,galaxies up to this huge distance.
--------------------------------------------
If you know more interesting facts like this then comment below.
For GK updates visit: The Infinite Studies
No comments:
Post a Comment