Reinvigorationism is a major belief orientation within the philosophy of Astronism, yet it is not categorised as one of The Seven Tenets of Association. Reinvigorationist belief is characterised by the notion that the enthusiasm and global awareness for the Space Age was a time of humanity's excellence and high potentiality. However, since the Space Age ended, the enthusiasm for space travel has taken a downward turn. 

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Reinvigorationists believe that this downward spiral is something that should be reversed, or reinvigorated by the founding of the philosophy of Astronism and further propelled by The Institution of The Philosophy of Millettism. Reinvigorationism is characterised by the belief in the importance of the Astronomic Revolution and is similar to the reascensionist movement in that the reascensionist movement advocates for the return of philosophy as the reinvigorationist movement advocates for the return of the culture and social movement characterised by the Space Age.