Assertion: ion | /r/CapableOf | travel the speed of light
Facets:
value: at 99.7%
type: OTHER
Source sentences:
text: As ions enter the Alternating Gradient Synchrotron (AGS) from the Booster, they are traveling at about 37% the speed of light.
text: As they whirl around the AGS and are accelerated as in the Booster, the ions get even more energy -- until they are traveling at 99.7% the speed of light.