Per Aspera Ad Astra is the fourth studio album by Stars of the Lid, made in collaboration with artist Jon McCafferty and released on Kranky in 1998. McCafferty approached Stars of the Lid with a view towards collaboration after working on a series of paintings inspired by the duo's 1995 debut Music for Nitrous Oxide. The title is a common Latin phrase translatable as "through hardships, to the stars."
Stars of the Lid elaborated on the album's reasoning on its inner sleeve.
John Bush, writing for AllMusic, stated: