Exploring Stars in Underground Laboratories: Challenges and Solutions

TL;DR

This paper reviews the progress and challenges of studying stellar nuclear fusion reactions in underground laboratories, highlighting breakthroughs from 30 years of LUNA's activities and future prospects in the field.

Contribution

It provides a comprehensive overview of technological and scientific advancements achieved through underground nuclear astrophysics experiments, emphasizing the importance of these labs for stellar research.

Findings

Major breakthroughs in nuclear astrophysics from underground labs

Development of innovative instrumentation for reaction detection

Future opportunities for research at underground facilities

Abstract

For millennia, mankind has been fascinated by the marvel of the starry night sky. Yet, a proper scientific understanding of how stars form, shine, and die is a relatively recent achievement, made possible by the interplay of different disciplines as well as by significant technological, theoretical, and observational progress. We now know that stars are sustained by nuclear fusion reactions and are the furnaces where all chemical elements continue to be forged out of primordial hydrogen and helium. Studying these reactions in terrestrial laboratories presents serious challenges and often requires developing ingenious instrumentation and detection techniques. Here, we reveal how some of the major breakthroughs in our quest to unveil the inner workings of stars have come from the most unexpected of places: deep underground. As we celebrate 30 years of activity at the first underground laboratory for nuclear astrophysics, LUNA, we review some of the key milestones and anticipate future opportunities for further advances both at LUNA and at other underground laboratories worldwide.