In the 1920's, the German mathematician David Hilbert devised a famous thought experiment to show us just how hard it is to wrap our...

Ek samandar hai, jo paar karna hai, Ek boond hai jisme mai doob raha hun. Ek manzil hai, jahan pohanch na hai, Ek naakaami hai, jis se...

agar magar aur kaash mai hui, mai khud apni talaash mai huin kisi ki ummed, kisi ka toota khwab huin. kisi ki muskurahat, kisi ka chupa...

Paradox: As far as we know, time only moves in one direction – forward – but if you could loop back to visit the universe at an earlier...