Japan is developing a 100-year nuclear battery that is powered by radioactive americium in a daring step to redefine space exploration. Unlike conventional solar panels that stumble in the dark, far-flung parts of space, this innovation offers almost perpetual power—even on the dark side of the Moon or other deep-space jaunts.
Under the leadership of the Japan Atomic Energy Agency (JAEA), in collaboration with JAXA and AIST, the project is designed to develop a compact power source that could last for long periods on probes and satellites by the year 2029. At its heart is americium, a byproduct of nuclear waste that is easier to regulate than plutonium. Although it produces less decay heat, the availability and long life of americium make it perfect for space missions where there is no maintenance and no sunlight.
This is a significant change in global energy dynamics for space exploration. By reusing spent MOX fuel to extract americium, Japan shows not only technical creativity but also responsible use of resources. Engineers have come up with a technique to encapsulate americium pellets in reinforced metal pins—safety guaranteed even in launch accidents.
One of the major milestones was the achievement of JAEA in the use of americium to power LED lights, which proved the feasibility of converting decay heat into electricity. This milestone brings Japan one step closer to creating a resilient energy solution for future interplanetary missions.
This nuclear battery would sideline solar technology in space if successful, allowing longer missions to previously unreachable destinations. It is more than a technological feat; it is a declaration of Japan’s desire to take the lead in the next space exploration.
With the prototype almost complete, the world is watching with keen interest. This innovation does not only threaten solar supremacy but can potentially usher in mankind’s boldest cosmic travels to date.
