An hourglass with sand filters through the top half, and skyscrapers are seen within the upper part against an orange gradient background.
Cover Story

The end of an era

By Jonathan O'Callaghan

October 2024

If all goes as NASA plans, the deorbiting of the International Space Station in early 2031 will be its final chapter, but also the start of a new one in which one or more companies will operate their own stations independently from NASA. But not everyone believes the station should be deorbited then, if ever. Jonathan O’Callaghan examined the differing views and proposed alternatives.

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A rocket engine in a blue metal frame emits a flame and smoke during a test against a backdrop of concrete blocks and a clear blue sky.
Engineering Notebook

Making a new motor for hypersonics

By Keith Button

October 2024

Hypersonic weapons and experimental versions share something in common: They must be boosted up to high speeds so that tests can begin or hypersonic weapons can be released. Keith Button spoke to aerospace engineers who think they have a better motor for these jobs.

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Aircraft Propulsion

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Commercial Spaceflight

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Space Science

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