Akshay, who will be seen essaying the role of Rakesh Dhawan, is seen as announcing that the spacecraft is 'good to go for launch'.
Rakesh and Tara Shinde (Vidya Balan) lead a team of scientists who overcome their personal challenges and failures to serve as the brains behind one of the greatest missions in history: the launch of India's first satellite to Mars.
The 45-second teaser also gives glimpses into the lives of the characters essayed by Taapsee Pannu, Sharman Joshi, Sonakshi Sinha, Nithya Menen and Kirti Kulhari as the ten-second countdown is heard in the background.
The clip ends with a note 'This Independence Day, the sky is not the limit'.
The teaser was shared by Akshay Kumar on Twitter where he wrote, "Ek Desh. Ek Sapna. Ek Ithihaas (One Nation, one dream, one history). The true story of India's #SpaceMission to Mars is here."