Mohan Bhargava is working on a rainfall monitoring satellite known as the Global Precipitation Measurement (GPM), which is lifted into an orbit aboard a Space Shuttle. The GPM is an actual NASA mission, was launched in 2014.
When Mohan and the villagers get together in the school for a celebration, we can see a blackboard in the background with a design drawn on it with chalk. That design is actually the logo of Ashutosh Gowariker Productions.
The Book "BAPU KUTI" which firstly inspired Ashutosh Gowarikar about the idea of Movie "Swades" and is acknowledged in the starting of the movie is shown in the bookstore scene when Sharukh Khan was at the counter billing books for Gayatri Joshi.
Since the making of the film was so close to Shahrukh's heart, he could not bear to see it end and hence he never saw the film. "Making Swades was such an emotionally overwhelming experience that I never saw the finished product. Didn't want the feeling to end." - Shahrukh Khan