Final answer:
Neutrinos help us understand the core of the Sun by passing through it, traversing Earth easily, and changing form during their journey.
Step-by-step explanation:
Neutrinos help us understand what is going on in the core of the Sun in several ways. Firstly, neutrinos produced in the core of the Sun traverse straight through the Sun and travel to Earth at nearly the speed of light, making them a valuable tool for probing the Sun's interior. Secondly, neutrinos are able to pass easily through Earth, allowing scientists to detect them and gather information about the Sun's core. Lastly, on their journey from the Sun to Earth, neutrinos can change form, which provides further insights into their properties and dynamics.