|Why Accelerators Matter|
A cosmologist's assessment: The universe is not enough
For two decades, I have been an advocate for using the universe as a heavenly laboratory to extend our experimental reach in addressing some of the most exciting questions in science. Indeed, experiments using beams of neutrinos from the sun, a distant supernova and cosmic-ray collisions in Earth's atmosphere have taught us much about the properties of neutrinos, including the first solid evidence for neutrino mass.
Yet, in making the case for nonaccelerator physics, I (and others) may have been too successful.