Kids are always kids !!!!

 My nephew Aniruddha is very fond of astronomy.

 He is aware of new  updates on astronomy.

I am always ready to cross question him  !!!!

I asked him one question,

Why Pluto is considered as a dwarf planet instead of a planet ???

Aniruddha  :   There are some standards to be fulfilled by a celestial body to be a planet.

Pluto dont  satisfy them. Thats why Pluto is not a planet  !!!!

Me :  Which was the condition that Pluto didn't satisfy ???

Aniruddha  :  Pluto don't have its own orbit to circulate around Sun.

                            It uses Neptune's orbit   !!!!

This was new thing to me. 

Me :  If Pluto is using Neptune's orbit , there is a possibility that they may collide with each other.......

Aniruddha  :  Since billions of years,  it is happening.  Both of them didn't collide   !!!!

So, in future  also , both of them may not collide with each other.

You don't worry.......!!!!!

Listening to that, I changed the topic of discussion..........