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Cosmologist

Cosmologists study the universe as a whole — how it began, what it is made of, and how it will change.

Class 11–12 subjectsPhysics, Chemistry, Maths

Entrance / admissionCUET UG / IISER Aptitude Test

DegreeB.Sc / BS-MS + M.Sc + PhD (Physics)

DurationAbout 10 years including PhD

Your route, step by step

1Class 11–12: take PCMVery strong Maths and Physics, especially calculus and modern physics.
2B.Sc / BS-MS Physics or MathsThrough CUET UG, IISER Aptitude Test, NEST or CMI.
3M.Sc PhysicsStrong theory, maths and programming.
4PhD through JESTThen postdoctoral research, often abroad.

What a cosmologist does

Develop theories of the early universe
Analyse cosmic background and galaxy-survey data
Run large computer simulations
Publish and debate research

Entrance exams & admission

CUET UGB.Sc at central universities
IISER Aptitude TestBS-MS at IISERs
JESTPhD entrance

Where you may work

Theoretical physics and astrophysics institutes, universities and international collaborations.

Well-known colleges in and near Tamil Nadu

Chennai Mathematical Institute
IISER Tirupati

Official links

Exam / admissionIISER Aptitude Test (BS-MS admissions) (opens in a new tab)iiseradmission.in
Exam / admissionNEST — NISER & UM-DAE CEBS admissions (opens in a new tab)nestexam.in
Exam / admissionNational Testing Agency (CUET UG notices) (opens in a new tab)nta.ac.in
Exam / admissionJEST — PhD entrance for physics & astronomy (opens in a new tab)jest.org.in
CollegeChennai Mathematical Institute (opens in a new tab)cmi.ac.in
Official bodyIUCAA — Inter-University Centre for Astronomy & Astrophysics (opens in a new tab)iucaa.in

Links checked: Oct 2026. Always confirm dates and rules on the official site.

Outlook

One of the most theoretical and competitive research fields — choose it for love of the subject.

Specialise later

Early universe
Dark matter & dark energy
Cosmic microwave background
Large-scale structure
Gravitation