Prime Minister Narendra Modi today said scientists and technicians have made great sacrifices for the country. He said the film Rocketry covers an important topic which more people must know about. <br />''<br />''<span style="color: #222222;">Mr Modi said this while quoting a tweet of film actor R Madhavan who said he was honored to have met the Prime Minister recently along with ex ISRO scientist Nambi Narayanan.</span><br />