Assertion: cosmic ray's composition | /r/CapableOf | provide information
Facets:
value: on history
type: OTHER
Source sentences:
text: The common heavier elements (such as carbon, oxygen, magnesium, silicon, and iron) are present in about the same relative abundances as in the solar system, but there are important differences in elemental and isotopic composition that provide information on the origin and history of galactic cosmic rays.