In relativity theory, fast-moving clocks tick more slowly than slow-moving ones. The effect increases as one approaches the speed of light. But what happens at the speed of light? Do photons experience time? In this video, Don Lincoln lays out what we know about this interesting question.

Particle physics research attempts to answer timeless questions – questions first asked thousands of years ago. In this video, Don Lincoln gives an overview of some of the most pressing unanswered questions of physics and describes how it is that scientists are deciding which of these questions to pursue.

Artificial intelligence services are the current trend, but can AI replace neutrino physicists? Join Kirsty Duffy and AI expert, V Hewes, a postdoctoral researcher, as they discuss the possibilities of using the latest machine learning technology in neutrino research.

Is gravity a force?

Is gravity is a force? The answer to that simple question is remarkably complicated and depends crucially on the theoretical framework in which the question is asked and answered. In this video, Don Lincoln takes on this surprisingly tricky question.

Special relativity is known to make mind-blowing predictions, perhaps most notably the twin paradox, in which two individuals claim that the other person’s clock is doing something funny. There have been many explanations, including two videos that seem to contradict each other but don’t. In this video, Don Lincoln explains how the two videos can be reconciled.

While wormholes are allowed by Albert Einstein’s theory of relativity, wormholes have never been found in the universe. In 2022, a team of scientists, including Joe Lykken, leader of the Fermilab Quantum Institute, published an article about the observation of wormhole dynamics in the science journal Nature.

Can protons decay?

The Standard Model is the best theory devised that describes most of the data taken in the quantum realm. It predicts that protons are stable. But what if the Standard Model is wrong? Could protons decay? In this video, Don Lincoln talks about why we think protons are stable and how we could be wrong.

Scientists are pretty sure the universe started with the Big Bang. But the furthest back in time we can explore is 370,000 years after spacetime began. So, how do we measure the Big Bang, and how could our favorite friends — neutrinos — revolutionize our understanding of the early universe? In this video, physicist Kirsty Duffy explores these concepts and discusses the cosmic neutrino background.