Universo peregrino: ciencia galega cara o mundo

“Universo peregrino: ciencia galega cara o mundo” (Pilgrim Universe: Galician science towards the world) is a series of online outreach talks organized by the Galician Institute of High Energy Physics (IGFAE) of the University of Santiago de Compostela for the Galician-speaking international community. In moments of isolation in which pilgrims cannot come to Santiago, the Xacobean city is the one that rebuilds the bridges and undertakes the pilgrimage to the world. Every Thursday in May and June 2020, at 16:00 (Madrid time), IGFAE researchers will give a talk on various physics topics that can be followed online. The videos will be uploaded to our Youtube channel afterwards.

Cibrán Santamarina explains in this first talk the origins of matter and how particles such as the Higgs boson are investigated at CERN.

Sometimes, finding the origin of the smallest things we can imagine requires discovering how stars are born and die. And the mechanisms that we invent in the laboratory to understand the mysteries of the atomic nuclei are useful to diagnose and cure diseases. We will do a brief review of the subatomic world, reminding ourselves that we are all stardust.

Humans beings are curious by nature and more than once we ask ourselves the questions: Why are we here? Where did we come from? Where does the world come from? What is it made of? In this talk, we will try to show that we already have some answers to the amazingly complex universe in which we live.

Where does all that we see around us come from? A century ago this question was outside the realm of physics, but the scientific advances that have taken place in the last 100 years answered many questions about the origin and evolution of the Universe. In this talk we will make an introduction to the most remarkable achievements of this intellectual endeavor and explain the role that Stephen Hawking played in it.

Science fiction has always been interested in quarks and gluons, but did you know that they are very real? These particles, the fundamental blocks of strong force, are essential to explain the origin of the universe, so today it is a very booming topic in physics.

If the Universe had 24 hours, the matter that makes up everything around us was formed in just the first 3 minutes. From quarks, gluons, and leptons, the most elementary and unique particles, to the enormous diversity of galaxies and galaxy clusters, there is an evolutionary journey of 13.8 billion years. In this talk we will open a window to the skies to scrutinize the most intimate nature of matter.

Four fundamental forces can govern from the largest to the smallest objects in the universe. The gravitational interaction was the first to attract the attention of the great thinkers of antiquity, who were already raising their heads and trying to explain the intricate movements of the stars. In this third talk of Universo Peregrino we will see that there are many questions left to answer.

In recent years, the world’s largest particle physics laboratory, CERN, made the headlines in the media, especially related to the Large Hadron Collider (LHC), the largest particle accelerator ever built . IGFAE researcher Xabier Cid Vidal will explain the relevance of this facility, in order to understand how the detection of tiny particles requires such large and powerful machines.