The definition and history of Afrofuturism is found on Wikipedia.
Afrofuturism is a cultural aesthetic, philosophy of science and philosophy of history that explores the developing intersection of African diaspora culture with technology. It was coined by Mark Dery in 1993 and explored in the late 1990s through conversations led by Alondra Nelson. Afrofuturism addresses themes and concerns of the African diaspora through technoculture and science fiction, encompassing a range of media and artists with a shared interest in envisioning black futures that stem from Afrodiasporic experiences.
This conversation between Granville Carroll and Ohemaa Dixon is an interesting conversation on how Afrofuturism impacts their respective works.
Additional context and works by both artists can be found on HAFNY.ORG.