Assertion: cosmic ray | /r/MadeOf | proton
Facets:
Source sentences:
text: Assuming that these cosmic rays are also made of protons gives a speed of 299,792,457.99999999999992 m/s, which is extremely close to, but still below, the speed of light in a vacuum.
text: Cosmic rays are made of protons, scientists found as they used a vast array of telescopes arranged across the Utah desert.