The coming decades of space exploration hinge on a single, stubborn number: the 225 million kilometres between Earth and Mars ...

The United States flew a reactor in space in the 1960s and has studied nuclear thermal propulsion for decades. Fuel is not the primary limitation either; the enriched uranium supply chain is ...

The Departments of Energy and Defense partnered with Valar Atomics to transport a mini reactor from California to Utah. Read more.

A new preprint paper has taken a look at what propulsion systems could deliver spacecraft to a particularly interesting area ...

Sending a mission to the solar gravitational lens (SGL) is the most effective way of actually directly imaging a potentially ...

U.S. Space Nuclear Plans Are Rescued After 2025 Setback is available to both Aviation Week & Space Technology and AWIN subscribers. Subscribe now to read this content, plus receive critical analysis ...

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It has long become obvious that if we are to expand our reach into the solar system, the current means of propulsion for spaceships would simply not do. With such goals set for the near future, the ...

Artist’s impression of a spacecraft using Nuclear Thermal Propulsion (NTP) technology (Credit: General Atomics) Engineers at NASA’s Marshall Space Flight Center (MSFC) in Alabama have completed the ...

NASA has completed its cold-flow test campaign of a nuclear propulsion technology that could power future missions to the moon and Mars. The space agency said Tuesday that it conducted over 100 tests ...

For the last several months, nuclear startups have been raising large sums of money — well over $1 billion so far. Data centers and their thirst for electricity have been one driving force. But recent ...