text: sun,mujhe yeh black holes ke baare mein suna hai, par samajh nahi aata ki yeh itne dense kyun hote hain aur inka kya role hai universe mein!yaar, black holes kaafi interesting hain, samajh le ki yeh space-time ko warp karte hain, jaise kisi ne ek bada sa gaddha khod diya ho, sab kuch isme gir jata hai!