What information can helium-containing fullerenes in meteorites provide?

Helium-containing fullerenes (He@C${}_{60}$) found in meteorites are significant because they may provide valuable information regarding the origin of the celestial bodies in which they are discovered.1

These endohedral species, in which a helium atom is physically trapped inside a carbon cage, have been identified in minute samples at various geologic sites. Because these molecules can contain unusual isotope ratios, they serve as unique markers that help scientists trace the history and formation conditions of the extraterrestrial materials that carry them.1