Plans for nuclear-powered merchant ships must confront risks0

• SCIENCE, Science / Health, Science Mission Directorate, scientists, Space, Space Communications & Navigation Program, Space Launch System (SLS), Space Telescope, space-x-ipo, SpaceX
• August 3, 2026

The shipping industry needs low-carbon fuels if it is to reach net-zero greenhouse-gas emissions by 2050. But options are limited. Batteries can power ferries and vessels for use in harbours, but are impractical over long distances1. Methanol is hard to produce sustainably2. Ammonia is toxic and its supply chain is polluting3. Hydrogen is too bulky