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Space Development Agency’s Tournear still has need for speed

The Space Development agency has launched satellites to track missiles. Credit: SDA

Four years into his tenure atop the Pentagon’s Space Development Agency, Derek Tournear saw key goals realized in 2023. The first small, commercially built satellites for missile warning and communications are set to change how the Pentagon detects missile threats

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SNAPSHOT: Human spaceflight

Cumulative human spaceflight, 1961–March 18, 2024

As of mid-March, 685 astronauts have reached at least 80 kilometers above the Earth’s surface. This total includes 86 private astronauts, 22 times as many as there were two decades ago.

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INSIGHT: American dynamism sustains U.S. advantage

Justin Cadman

Space holds nearly limitless commercial and scientific potential. It is also essential to national security: maintaining freedom of action in space, and the protection of space-based assets, is fundamental. Rivals, led by China . . .

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