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Salmon Swimming Upstream: Charting a Course in Cislunar Space

There is a lot of promise—and hype—around the future of humankind in cislunar space, roughly the area between geosynchronous Earth orbit and the Moon. But there are also hard realities. Operating in cislunar space presents new technical and policy challenges that the United States and its allies will want to consider. Over the last several years,…

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From Earth to Uchū: The Evolution of Japan’s Space Security Policy and a Blueprint for Strengthening the U.S.-Japan Space Security Partnership

As Japan reckons with an increasingly tense security dynamic driven by growing Chinese and North Korean military activity and defense budgets, space capabilities are becoming integral to Japan’s national security. The U.S.-Japan security alliance continues to be at the core of both countries’ approaches to security and stability in the Indo-Pacific, with both seeking to…

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Space Threat Assessment 2024

Welcome to the seventh edition of Space Threat Assessment by the Aerospace Security Project at the Center for Strategic and International Studies (CSIS). For the last six years, CSIS has used open-source information to produce an annual assessment of threats to U.S. national security space systems posed by foreign government capabilities. Each report in this series catalogs yearly trends, uses, and advancements of…

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Aerospace 101

Discover the air and space domains with Aerospace 101, an article series from Aerospace Security experts. Aerospace 101 articles introduce technical concepts in aerospace engineering, aerospace security, and space policy with short introductions, key facts, and examples.

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Visualizing Data

The Aerospace Security data repository is an archive of data resources featured in published reports and analyses. Search the archive for interactive data visualizations, informational graphics, and raw data.

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