Astronomer
Astronomers study the origin and structure of the universe, including its planets, stars, galaxies and black holes.
In this guide
What you'll do
Day-to-day tasks
Your day to day duties will depend on your area of expertise.
In observational astronomy, you could:
- collect and analyse data from satellites and spacecraft
- explore space using radio and optical telescopes
- design new instruments and maintain existing equipment
- develop software to interpret images and data captured by satellites
In theoretical astronomy, you could:
- create computer models to test theories about space activities
- analyse the results of past observations to make new predictions
- make observations and develop theories
- analyse data to help build our understanding of events in the universe
Working environment
You could work in an observatory, in a laboratory, at a university or visit sites.
Your working environment may be outdoors some of the time and you may spend nights away from home.
Career path and progression
You'll usually start as a post-doctoral researcher before moving on to permanent posts that can lead to becoming a professor.
You can transfer your science skills across lots of careers and sectors, for example:
- aerospace research and development
- satellite research and development
- systems analysis
- software engineering
- teaching and lecturing
- science communication
- finance
What it takes
Skills and knowledge
You'll need:
- maths knowledge
- knowledge of physics
- analytical thinking skills
- science skills
- excellent verbal communication skills
- the ability to use your initiative
- the ability to think clearly using logic and reasoning
- concentration skills
- to have a thorough understanding of computer systems and applications
Related subjects
Most relevant
- Physics - Astronomers rely on physics to understand how stars, planets, galaxies, and black holes behave. Concepts like gravity, light, radiation, electromagnetism, and thermodynamics are fundamental to explaining everything from how stars form to how the universe expands.
- Mathematics - Astronomers use advanced mathematics constantly – from calculating the orbits of planets to modelling the behaviour of entire galaxies. Statistics, calculus, and algebra are essential for analysing data, testing theories, and making predictions about events in space.
- Computer Science - Astronomers develop software to interpret images and data captured by satellites and telescopes, and build computer models to simulate events like galaxy collisions or star formation. Programming skills and computational thinking are essential tools in modern astronomy research.
Also relevant
- Chemistry - Astronomers use spectroscopy to identify the chemical composition of stars, planets, and interstellar gas clouds. Understanding how elements form, react, and emit light helps them work out what distant objects are made of and how they evolved.
- Geography - Astronomers studying planets and moons draw on knowledge of physical processes like volcanism, atmospheric circulation, and surface erosion. Understanding how these processes work on Earth helps when interpreting data from other worlds in our solar system and beyond.
- Engineering - Astronomers design and maintain complex instruments like telescopes, detectors, and satellite equipment. Understanding engineering principles helps them develop new observation tools and solve practical problems with the hardware they depend on for their research.
- Electronics - Astronomers work with sensitive electronic detectors, radio receivers, and imaging sensors that capture signals from space. Understanding how electronic systems work helps them calibrate instruments, reduce interference, and get the most accurate data possible.
- English Language - Astronomers write detailed research papers, grant applications, and reports to share their findings with the scientific community and the public. Being able to communicate complex ideas clearly is important when presenting discoveries or explaining their significance.
How to become
You can get into this job through a university course.
You'll need a degree and postgraduate qualification to work as an astronomer. You'll usually need to have achieved a first or a 2:1 in your degree.
Relevant subjects include:
- maths
- physics
- astrophysics
- geophysics
- astronomy
- space science
You can also do an extended 4-year degree to get a postgraduate qualification like a master of physics. These courses include more independent research and can lead directly onto a PhD.
Many employers will expect you to have completed, or be working towards, a PhD in your specialist area of interest.
Entry requirements
You'll usually need:
- 5 GCSEs at grades 9 to 4 (A* to C), or equivalent, including English, maths and science
- 2 or 3 A levels, or equivalent, including maths and physics
- a degree in a relevant subject for postgraduate study
More Information
Career tips
Join an amateur astronomy group to share your interest, develop connections and get observation experience.
Further information
You can find more advice on careers in astronomy from the Royal Astronomical Society and SpaceCareers.uk.
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