Every seat in the Historic Homestake Opera House was filled when the lights dimmed for the Neutrino Day finale. Out of the quiet, the symphony’s music slowly built, and the performance began with a seemingly simple question, voiced by a child.
“What are the Northern Lights?”
The question propelled the cinematic story behind the phenomenon of the aurora borealis. Live music, orchestrated to perfectly align with swirling visuals of the Northern Lights, guided the storytelling—all to answer this single question.
This year's Neutrino Day was all about questions. We invited our community members to come curious—to bring their questions to the researchers and employees that make the advancement of scientific inquiry their everyday mission.
“We get all kinds of questions,” said Markus Horn, standing in the sunshine, but getting ready to go a mile underground to video chat from the 4850 Level. “Everything from ‘What is dark matter and how are you going to find it?’ to more detailed questions like ‘How fast will the xenon circulate through the detector?’ We have to be ready to answer anything the best we can.”
With a record-setting number of attendees, our Neutrino Day team welcomed questions from nearly 1,700 guests on topics of particle physics research, extremophiles living underground, the engineering behind deep science and new projects coming to Sanford Lab.
Here are our favorite Neutrino Day highlights.