Physical Review Applied (2026). DOI: 10.1103/483m-8hfc"> OSCAR-QUBE diamond-based magnetometer flown aboard the International Space Station. Credit: Physical Review Applied (2026). DOI: 10.1103/483m-8hfc From navigation to solar weather forecasting, many different areas of research require space-based sensors to measure Earth's magnetic field as accurately as possible at any given moment. So far, however, existing sensors have consistently struggled with effects including drift, interference from the spacecraft itself, and the harsh conditions of orbit. Through new research published in Physical Review Applied , Yarne Beerden and colleagues at Hasselt University in Belgium have developed a diamond-based quantum sensor which could offer a promising solution to these problems.…