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NSEA
National Standard Examination in Astronomy
HBCSE/IAPT Stage-1 astronomy olympiad. 80 MCQs in 3 hours combining Class 11+12 physics & math with celestial mechanics, spherical trigonometry, and observational astronomy.
Updated 3 Sept 2026 ·Vacancy counts change every cycle — always confirm the exact number in the latest official notification before applying.
Sourced
Source: official exam authority notification · refreshed weekly. How this works →
Free NSEA preparation on Shishya
Take expert-curated mocks, practise previous year papers, and Ask Shishya when you're stuck — verified by students who cleared the same path. All free, no credit card. Sign in with Google to begin.
✦ Try a NSEA question — free, no signup
Work, Energy and PowerA comet of mass m approaches the Sun from infinity with speed v. At its closest approach, its speed is 3v. The distance of closest approach in terms of G, M (Sun's mass), and v is:
Tap an option to check your answer.
డయగ్నోస్టిక్తో ప్రారంభించండి
మీరు ఎక్కడ ఉన్నారో చూడటానికి syllabus అంతటా 10 ప్రశ్నలు.
అధికారిక ఫలితం వచ్చినప్పుడు ఒక ఈమెయిల్, ఇంకేమీ కాదు.
🧩 Build your own mock — pick exact topics → · every mock readable in हिंदी + 12 languages inside the test
NSEA eligibility
Verified against the official notification. Source ↗ · last reconciled 2026-05.
- Education
- Currently studying in Class 8-12 in a recognised Indian school.
- Attempts
- One attempt per cycle.
- Nationality
- Indian citizen, OCI, or studying in Indian schools.
NSEA paper analysis — what actually got asked
Topic-by-topic weightage averaged across 2022-2024 papers. Use this to decide where to invest study hours, not where to skim. Source ↗ · verified 2026-05.
Mechanics
50/216 marks avg
Kinematics + dynamics + rotation + gravitation
~50 marks(23%)
Astronomy basics
60/216 marks avg
Celestial coordinate systems + Kepler's laws + astrometry
~60 marks(28%)
Electromagnetism + Modern Physics
50/216 marks avg
Stellar physics + spectra + cosmology basics
~50 marks(23%)
Mathematical Methods
30/216 marks avg
Trigonometry + vectors + calculus applications
~30 marks(14%)
Other
26/216 marks avg
Observational astronomy + spherical trigonometry
~26 marks(12%)
Takeaways for prep planning
- NSEA is uniquely Indian — most candidates have never studied astronomy formally. Self-study via 'Astronomy: Principles and Practice' is the standard route.
- Physics olympiad-level skills carry over; astronomy-specific knowledge (coordinate systems, ephemerides) needs separate prep.
- HBCSE astronomy camp graduates often go on to ISRO / TIFR research careers.
NSEA — Frequently asked questions
Is Shishya free for NSEA preparation?
How many NSEA practice questions does Shishya have?
Are NSEA previous year question papers available?
How long is the NSEA exam?
గత సంవత్సరాల పేపర్లు
101 అన్ని సంవత్సరాల్లో ప్రశ్నలుకొన్ని సంవత్సరాలకు పూర్తి పేపర్ కాదు, ఆ పేపర్లోని కొన్ని ప్రశ్నలు మాత్రమే ఉన్నాయి — ఎన్ని ఉన్నాయో ప్రతి కార్డు చూపుతుంది.
2025
80లో 21 ప్రశ్నలు
ఈ ప్రశ్నలు సాధన చేయండి →2024
80లో 21 ప్రశ్నలు
ఈ ప్రశ్నలు సాధన చేయండి →2023
80లో 20 ప్రశ్నలు
ఈ ప్రశ్నలు సాధన చేయండి →2022
80లో 20 ప్రశ్నలు
ఈ ప్రశ్నలు సాధన చేయండి →2021
80లో 19 ప్రశ్నలు
ఈ ప్రశ్నలు సాధన చేయండి →
Mock tests
నా అన్ని ప్రయత్నాలు →Take any mock in your preferred language — use the language picker inside the mock to switch (Hindi, Telugu, Tamil, Bengali, and 15 more).
NSEA — Quick Practice
FULL20 ప్రశ్నలు · 180 నిమి
మాక్ ప్రారంభించండి →NSEA — 2022 (Previous Year)
FULL20 ప్రశ్నలు · 180 నిమి
మాక్ ప్రారంభించండి →NSEA — 2025 (Previous Year)
FULL21 ప్రశ్నలు · 180 నిమి
మాక్ ప్రారంభించండి →NSEA — Full-Length Mock (Real Pattern: 80Q · 180 min)
FULL80 ప్రశ్నలు · 180 నిమి
మాక్ ప్రారంభించండి →
Practice by subject & topic
Full-length subject tests below — 25 questions each, real exam format, instant scoring. Want to drill a single topic? Every topic has its own 10-question test in the syllabus.
Physics
55 QsMathematics
27 QsElementary Astronomy
38 Qs
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మీ ర్యాంక్
ఈ పరీక్ష తీసుకున్న అందరితో పోల్చితేలీడర్బోర్డ్లో మీరు ఎక్కడ ఉన్నారో చూడటానికి మాక్ తీసుకోండి.
Students
7
Mocks taken
19
Average score
37%
Top score
70%
What can I get from NSEA?
Mock-score → expected rank → likely outcome. Use the mocks below to find your current band, then plan how many marks you need to climb.
National topper / IOAA team range
90–100% · Post-based exam (no numeric rank)
- •Expected to be among national top 20-30 students
- •Strong contender for Indian team to International Olympiad on Astronomy and Astrophysics (IOAA)
- •Invitation to pre-departure training camp at HBCSE — typically 15-20 students selected
- •Final IOAA team of 5 students chosen after camp performance
- •Previous IOAA team members have won gold, silver, bronze medals internationally
- •Recognition from HBCSE, IAPT, and potential research internship opportunities
National camp probable
80–90% · Post-based exam (no numeric rank)
- •Excellent chance for INAO top ranks (typically top 50-100)
- •High probability of Orientation-cum-Selection Camp (OCSC) at HBCSE Mumbai
- •Competitive for International Olympiad on Astronomy and Astrophysics (IOAA) team selection
- •May receive merit scholarships and recognition from IAPT/HBCSE
- •Focus on advanced astrophysics and observational astronomy for OCSC
INAO strong contender
70–80% · Post-based exam (no numeric rank)
INAO qualification likely
55–70% · Post-based exam (no numeric rank)
State-level qualification range
35–55% · Post-based exam (no numeric rank)
Below qualifying threshold
0–35% · Post-based exam (no numeric rank)
AI-curated from historic cut-off patterns. Always verify with the latest official notification before making decisions.
News & timeline
See older updates →తాజా వార్తలు
The Indian National Astronomy Olympiad (INAO), Stage-II of the Astronomy Olympiad programme, is scheduled for January 30, 2027, from 9:00 AM to 12:00 PM. Top NSEA scorers will qualify for INAO.
IAPT has started centre registration for NSEA 2026-27 from August 1, 2026. Schools, junior colleges and approved examination centres can register until August 20, 2026. Student enrolment begins August 21.
The National Standard Examination in Astronomy will be conducted on Saturday, November 21, 2026, from 2:30 PM to 4:30 PM. Enrolment fee is ₹300 per subject.
ముఖ్యమైన తేదీలు
Centre registration opens
గడిచిపోయిందిSat, 1 Aug, 2026
Schools, junior colleges and approved centres register via iapt.org.in
Centre registration closes
గడిచిపోయిందిThu, 20 Aug, 2026
Student enrolment opens
గడిచిపోయిందిFri, 21 Aug, 2026
Students can enrol via school or directly through IAPT portal; fee ₹300
Student enrolment closes
3 రోజులు మిగిలాయిMon, 14 Sept, 2026
Admit card release (expected)
50 రోజులు మిగిలాయిSat, 31 Oct, 2026
Based on 2025-26 cycle when admit cards were released on October 31, 2025
🏅NSEA 2026 exam
71 రోజులు మిగిలాయిSat, 21 Nov, 2026
Saturday, 2:30 PM to 4:30 PM (2 hours)
NSEA result (expected)
103 రోజులు మిగిలాయిWed, 23 Dec, 2026
Based on 2025-26 cycle; result typically in late December
🏅INAO (Stage-II) exam
141 రోజులు మిగిలాయిSat, 30 Jan, 2027
Indian National Astronomy Olympiad; 9:00 AM to 12:00 PM; only for NSEA qualifiers
Syllabus
ఏదైనా టాపిక్పై ట్యాప్ చేయండి — నోట్స్ + 10 ప్రశ్నల టాపిక్ టెస్ట్
Physics
Units and Measurements
SI units, dimensional analysis, error analysis used heavily in astronomy estimation problems.
Kinematics
Motion in 1D and 2D, projectile motion and relative motion.
Laws of Motion
Newton's laws, friction and circular dynamics.
Work, Energy and Power
Work-energy theorem, conservation laws and elastic/inelastic collisions.
Rotational Motion
Centre of mass, torque, angular momentum and moment of inertia.
Gravitation
Newton's law of gravitation, gravitational potential, Kepler's laws and orbital mechanics — central to NSEA.
Mechanical Properties of Solids and Fluids
Elasticity, pressure, buoyancy, viscosity and Bernoulli's principle.
Thermal Physics and Thermodynamics
Heat transfer (conduction, convection, radiation), blackbody radiation and laws of thermodynamics.
Kinetic Theory of Gases
Ideal gas law, equipartition and mean free path — used in stellar atmosphere problems.
Oscillations and Waves
SHM, sound, superposition, beats and Doppler effect (used for radial-velocity problems).
Electrostatics
Coulomb's law, electric field/potential, Gauss's law and capacitance.
Current Electricity
Ohm's law, Kirchhoff's laws, Wheatstone bridge and circuits.
Magnetism and Electromagnetic Induction
Magnetic effects of current, Faraday's law, AC circuits and electromagnetic waves.
Optics
Reflection, refraction, lenses, telescopes, interference, diffraction and polarisation.
Modern Physics
Photoelectric effect, atoms, nuclei, radioactivity and elementary particle ideas.
Mathematics
Sets, Relations and Functions
Sets, relations, types of functions and inverse trigonometric functions.
Algebra
Mathematical induction, complex numbers, quadratic equations, sequences and series.
Permutations and Combinations
Counting principles, nPr/nCr and elementary combinatorial reasoning.
Binomial Theorem
Binomial expansion, general term and applications.
Matrices and Determinants
Matrix operations, determinants and solution of linear systems.
Coordinate Geometry
Straight lines, circles and conic sections.
Trigonometry
Trigonometric ratios, identities, equations and inverse trig — heavily used in astronomy.
Three Dimensional Geometry
Direction cosines, lines and planes in 3D.
Vectors
Vector algebra, dot and cross products and applications.
Probability and Statistics
Probability rules, conditional probability, mean, variance and standard deviation.
Mathematical Reasoning
Logical statements, validity of arguments and elementary proof techniques.
Elementary Astronomy
Celestial Sphere and Coordinate Systems
Celestial sphere, horizon, equatorial and ecliptic coordinate systems and conversions.
Spherical Trigonometry
Sine and cosine rules on a sphere — used for converting between coordinate systems.
Time and Calendars
Solar and sidereal time, time zones, equation of time, Julian date and calendar systems.
Diurnal and Annual Motion
Daily rising/setting of stars, seasons, solstices, equinoxes and circumpolar stars.
Solar System
Sun, planets, moons, asteroids, comets, meteors and dwarf planets — basic structure and properties.
Celestial Mechanics
Kepler's laws, orbital elements, two-body problem and basic perturbations.
Lunar Phases, Eclipses and Tides
Phases of the Moon, solar/lunar eclipses, occultations, transits and ocean tides.
Stellar Astronomy Basics
Stellar magnitudes, spectral classification, HR diagram and stellar evolution overview.
Photometry and Spectroscopy
Flux, luminosity, inverse-square law, photometric systems and spectral lines.
Galaxies and Cosmology
Milky Way structure, galaxy types, redshift, Hubble's law and basic cosmological ideas.
Night Sky and Constellations
Familiar constellations, bright stars, asterisms and naked-eye object identification.
Telescopes and Instruments
Refracting/reflecting telescopes, magnification, resolving power and modern observatories.
History of Astronomy
Major astronomers and milestones from ancient observations to modern astrophysics.