Astra Lost in Space (彼方のアストラ, Kanata no Asutora) is a Japanese manga series by Kenta Shinohara. It was serialized online between May 2016 and December 2017 via Shueisha’s Shonen Jump+ website/app. It was collected in five tankōbon volumes.
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English Translation
Viz Media
The manga is published in English by Viz Media.