Hamare universe mein kitne grah hain ? 

Hamari duniya mein kul kitne grah hain ?

Hamari duniya mein kul kitne grah hain ?

Hamare observable universe mein kitni grah hain, iska sakshi swaroop ab tak nahi pata chala hai. Scientists estimated hai ki observable universe mein billions se zyada galaxies hain, aur har ek galaxy mein bhi millions ya billions ke aas-paas tare hote hain. Har ek tara apne solar system ke saath juda hota hai, jisme grah, satellites, aur anya celestrial bodies hote hain. Is tarah se, universe mein grahon ki ginati ginana mushkil hai, kyun ki humare observation capabilities seemit hain.