Bring hundreds of smart physicists together and what do you get? Lots of questions!
This summer, more than 700 particle physicists from nearly 100 universities and laboratories across the United States came together on the University of Minnesota’s Twin Cities campus for the Snowmass Community Summer Study meeting. There, they discussed the decades ahead in US particle physics, carefully considering the next steps in their studies of energy, matter, space and time.
During coffee breaks, symmetry asked attendees to share open questions in particle physics. Here’s a sample of what particle physicists think about and what they hope to discover in the coming decades. (A poster of these questions is also available here.)

Steve Wimpenny

Stefan Funk

Robin Erbacher

Kevin Lesko

Erik Ramberg

Elizabeth Worcester

Kanika Sachdev

James Matthews

Akiya Miyamoto
Hiroaki Ono

Jonathan Asaadi

Herman White

Chien-Yi Chen

Hao-Yi Wu

Inga Karliner

Ian Shipsey

Richard Ruiz

Marcelle Soares-Santos

Ren-Yuan Zhu

Wade Fisher

Paul Lebrun

Abigail Vieregg

Altan Cakir

Peter Onyisi

Brenda Dingus

Pushpa Bhat

Gabe Shaughnessy

Alysia Marino

Prisca Cushman

Rebecca (age 4)

Ian Shipsey