Time taken for journey to the moon India is going to launch a spacecraft to the moon on 16 July which will consist of a lander, an orbiter and a rover. I found an article in today's newspaper regarding   this. If you zoom in a bit, you will be able to see the list of other lunar missions that have taken place over the years. A common difference that I found in lunar missions of 20th century and lunar missions of 21st century was the time. Earlier, the spacecrafts reached moon in a day or two but recent missions take over 2 months. 

With developed technology, it should take even less time, but it's the other way round. Can anyone explain the reason behind this.
Some trajectories need less energy than others, so to save on fuel, scientists often choose the lengthy, fuel efficient journey rather than a shorter one. In the case of the Apollo astronauts, it was important to get them to the moon in the shortest possible time, so a short trajectory was chosen.