This research thesis explores possible scenarios in sci-fi cinema for the future of humanity in relation to the dynamic associations it presents with the sun. The sun is examined in terms of its effect on society and culture, in the past, present and future. The concept of Solarity is explored as a constant in human life that affects and is affected by human activity. The sci-fi cinema succeeds in creating future depictions, both utopian and dystopian, that deal with different aspects of Solarity. Solarity emerges in its most hostile form on planet Arakis of the movie Dune (2021), as an extreme scenario for the future of climate change and is compared to phenomena of today and historical analogues. Post-solar societies are introduced in the films Last Sunrise (2019) and Snowpiercer (2013), in which we try to attempt the conditions that led to the absence of the sun and the subsequent consequences for humanity. The last chapter examines a future reaching a utopia thanks to energy abundance, the African country of Wakanda, presented in the film Black Panther (2019). This utopia is compared and connected in the fields of Solarpunk and Afrofuturism, and manages to urge us to envision a better future. The different solar imaginaries that are presented, set humans as a central factor in their origin, course and evolution.