Scientists sent lunar cement "from Erasmus" to the International Space Station. Six months later, it came back stronger than vinegar

Researchers at the University of Delaware tested simulated lunar cement on the ISS for six months.

When the samples returned, they had not lost strength; some were even stronger than on Earth.

The study also explored regolith-based geopolymers, an AI tool for optimizing mixes, and a more flexible curing reaction than expected.

The findings could help make future lunar construction cheaper by using local resources on the Moon.