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Physics and astrophysics


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What is Astrophysics?

Since the dawn of human civilisation humans have gazed in wonder at the night sky. Astrophysics – the exploration of our solar system and the universe beyond – is still a major part of human endeavour in science. It covers everything from the sun and other stars to planets, galaxies and the cosmic microwave background.

Physics and Astrophysics: The course for you?

If you enjoy laboratory and computational work and have an interest in how fundamental physical theories can be used to explain how the universe took shape, then this may be the course for you.

Physics and Astrophysics @ Trinity

The Trinity Physics and Astrophysics course includes core physics subjects as well as specialised courses in astronomical instrumentation, spectroscopy, the solar system, stellar evolution, supernovae, galaxies, interstellar matter, black holes and cosmology. Half of the third year laboratory class is devoted to learning computational data handling techniques relevant for astrophysics and the wider world of big data. The School of Physics is equipped with an 11” optical telescope and a 5 cm solar telescope for undergraduate use in the Monck Observatory.  Physics and Astrophysics at Trinity offers you the opportunity to study with world-leading experts in the School of Physics, with modules designed to provide you with a flexible qualification for employment across a range of astrophysics research and industrial settings.

Your degree and what you’ll study

In the first two years you study freshman Physics and Mathematics and one other subject. The freshman Physics course includes topics in Astrophysics, Statistics, Mechanics, Thermodynamics, Electricity, Acoustics and Optics, Nuclear Physics and Quantum Physics. The freshman Mathematics course includes topics in Calculus, Linear Algebra, Fourier Analysis and Mechanics.You spend three hours per week in experimental or computational laboratories. You will learn computer coding skills through the Python programming language.

In the third year you take modules in Physics and Astrophysics and spend one day per week working in the computer laboratory (first semester) or in the experimental laboratory (second semester).  You also receive training in communication and presentation skills.  In the fourth year you carry out an experimental or computational research project during the first nine weeks of the first semester and then take lecture modules in Physics and Astrophysics which cover core Physics and Astrophysics at a more advanced level.  In the fourth year you carry out a research project either in Trinity or in a research laboratory abroad, mainly in Europe, Canada or the USA. This will allow you to develop your practical skills in a research environment, while learning about different countries and cultures.


Quantum Mechanics, Electromagnetic Interactions, Condensed Matter Physics, Atomic and Nuclear Physics, Stellar and Galactic Structure, Computer Simulation, Statistical Thermodynamics and Astrophysical Spectroscopy, Experimental Techniques for Astrophysics, 


Planetary and Space Science, Cosmology, Computer Simulation, Quantum Physics, High Energy Physics, Electromagnetic Interactions, Modern Optics and Practical in Physics and Astrophysics.

If you would like more detailed information on all the modules offered, see:

Study abroad and internships opportunities

You may undertake your fourth year project at a research institute or university in the EU or further afield, provided you attain a sufficient standard in the third year examinations. In recent years, students have worked at the NASA Goddard Space Flight Center in the United States and at the European Space Agency in Madrid.  

Information on the year abroad programme for second or third year students, and a list of partner universities, can be found at:


A Maths/Physics Open Day is held in November each year, see:

Twitter: @npcamtcd 


Tel: +353 1 896 1675 / 2024

What our graduates say

Aoife McCloskey Postgraduate Student in Astrophysics and TCD graduate in Physics and Astrophysics

““I specialised in Physics and Astrophysics for my final degree, graduating in 2014. My undergraduate experience provided me with a range of invaluable skills and knowledge, such as problem-solving and coding,that have prepared me for pursuing a diverse range of scientific careers. I particularly love scientific research and am currently a PhD student with the Astrophysics Research Group at Trinity. Along with my research I also work as an educator with the Trinity Walton Club, teaching Mathematics to secondary school students. Without my undergraduate degree I would not have had these opportunities.”

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Admission Requirements

For general admission requirements please click here