Rock surrounding an underground laboratory absorbs nonspecific background radiation from the space and environment. This is advantageous to scientists studying extremely rare phenomena, such as the interactions of neutrinos and the possible decay of the basic components of matter, the protons. Neutrinos are elementary, electrically neutral particles, which come from the space, from the inner part of the Sun or the Earth, travel close to the speed of light and are able to pass through ordinary matter basically undisturbed. Underground physics and astrophysics search answers to fundamental questions like:
- What happens inside the Sun?
- How do the supernovae explode?
- What is the dark matter of the Universe?
- Why does matter dominate over antimatter?
- Are protons stable or unstable?