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The magazine of National Space Society

Your Doorway to New Worlds

Ad Astra is bringing you compelling stories of space exploration and development with minimal advertising! Subscribe now, and start your journey into the stars.

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ISDC 2021 June 24 to 26

International Space Development Conference 2021
This exciting, four-day virtual event looks at the future of space settlement and exploration. And best of all, the first three days of ISDC 2021 (Thursday – Saturday, June 24-26) are entirely

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