ANSWER:

The miraculous journey took place once. It happened on the same night and it was not a dream, rather the Prophet (salla Allahu alaihi wa sallam) traveled on this night physically. However, he had after that a number of different visions which he traveled with his soul! 

 

I wanted to know whether Israa and Mairaj occurred in the same night or were different incidents and secondly did they happen in the whole night or was the time stopped or something as I heard Aisha(RA) or some other wife said that RasoolAllah was in his bed the entire time.