# Satellites could track nuclear weapons hidden in space

Researchers have proposed using satellite-based sensors to detect nuclear weapons that might be covertly placed in orbit. This method could help monitor compliance with space treaties and prevent a new arms race beyond Earth. The development is critical for global security as space becomes an increasingly contested domain.

**Importance:** 4/5

## Sources

### Science
- [Nature](https://www.nature.com/articles/d41586-026-01944-4) — 2026-07-08