I found the answer sheet online for you
You can't change time to a measurement of distance
A uranium-235 atom<span> absorbs a neutron and fissions into two new </span>atoms<span> (fission fragments), releasing three new neutrons and some binding energy. ... Several heavy elements, such as uranium, thorium, and plutonium, undergo both spontaneous fission, a form of radioactive decay and induced fission, a form of </span>nuclear<span> reaction.</span>
It makes the data thet they collect more reliable so if they need the data again, they have already tested it a few times so therefor they know that it is right.
