As the expanding universe cooled after the Big Bang, protons and electrons found each other and made hydrogen atoms, with a little helium and lithium. Illustration: CERN

The existence of hydrogen in our universe was touch-and-go. During the Big Bang, it depended on a minuscule mass difference between two subatomic particles called quarks.

Let’s talk about some of the largest explosions in the universe: supernovae. Join Fermilab scientists Dr. Kirsty Duffy and Dr. Anne Schukraft to find out more about exploding stars, tiny particles and the SuperNova Early Warning System (SNEWS).

From, Feb. 16, 2021: Though the findings from the Holometer mean that, for now, scientists still haven’t found a way to solve general relativity with quantum mechanics, its design and the research it enabled will shape future efforts to prove the intersection of relativity and quantum mechanics at Planck scales.

Scientists in Latin America recently published the first coordinated plan for the region’s research in high-energy physics, astrophysics and cosmology. Fermilab scientist Marcela Carena was part of the group that collected input for the report. Here, she weighs in its significance.