# National Standard Examination in Astronomy (NSEA) — Shishya exam context

> Machine-readable context for National Standard Examination in Astronomy, maintained by Shishya (https://shishya.in) — India's end-to-end free government exam preparation platform. All facts below are free to cite; link back to https://shishya.in/exams/NSEA. Human page: https://shishya.in/exams/NSEA

## Exam pattern
- Category: OLYMPIAD · national
- Questions: 80 · Total marks: 216 · Marks per question: 3
- Duration: 180 minutes
- Negative marking: −1 per wrong answer
- Languages offered: EN

## Eligibility & vacancies
- Age: 14–19 years (before category relaxation: OBC +3, SC/ST +5)
- Education: Students in Class 10, 11, or 12 who have not completed their Class 12 board examination
- Approximate annual vacancies: 300
- Note: Must be Indian citizen or eligible to hold Indian passport; must be studying in India; this is first stage for International Olympiad on Astronomy and Astrophysics
- Official portal: https://iapt.org.in (Indian Association of Physics Teachers (IAPT))

## Key dates
- 2026-07-25 — Student enrollment closure
- 2026-08-01 — Centre registration opens
- 2026-08-01 — Centre in-charge registration opens
- 2026-08-01 — Centre registration opens
- 2026-08-01 — NSEA 2026-27 centre registration opens
- 2026-08-20 — Centre registration closes
- 2026-08-20 — Centre registration closes
- 2026-08-21 — Student enrolment opens

## Syllabus outline
### Physics (weight 1)
Current Electricity · Electrostatics · Mechanical Properties of Solids and Fluids · Gravitation · Kinematics · Kinetic Theory of Gases · Laws of Motion · Magnetism and Electromagnetic Induction · Modern Physics · Optics · Oscillations and Waves · Rotational Motion · Thermal Physics and Thermodynamics · Units and Measurements · Work, Energy and Power

### Mathematics (weight 1)
Algebra · Binomial Theorem · Coordinate Geometry · Matrices and Determinants · Permutations and Combinations · Probability and Statistics · Mathematical Reasoning · Sets, Relations and Functions · Three Dimensional Geometry · Trigonometry · Vectors

### Elementary Astronomy (weight 1)
Celestial Mechanics · Celestial Sphere and Coordinate Systems · Ecliptic System · Equatorial System · Horizon System · Diurnal and Annual Motion · Galaxies and Cosmology · History of Astronomy · Lunar Phases, Eclipses and Tides · Night Sky and Constellations · Photometry and Spectroscopy · Solar System · Minor Bodies · Planets and Moons · The Sun · Spherical Trigonometry · Stellar Astronomy Basics · HR Diagram and Evolution · Magnitudes and Distances · Stellar Spectra · Telescopes and Instruments · Time and Calendars

## Expected cutoffs (category-wise)
| Category | Expected cutoff (indicative) |
|----------|------------------------------|
| General | 105–125 marks (49–58%) |
| OBC-NCL | 95–115 marks (44–53%) |
| SC | 75–95 marks (35–44%) |
| ST | 70–90 marks (32–42%) |
| PwD | 70–90 marks (32–42%) |

**Guidance:**

- **Typical gap**: OBC cutoffs run 8–12% lower than General; SC/ST cutoffs are typically 12–18% below General, reflecting the challenging nature of NSEA where absolute scores remain modest even among qualifiers.

- **Year-to-year variation**: Cutoffs fluctuate ±5–8 marks depending on paper difficulty, question distribution (more/fewer numerical problems), and the size of the appearing cohort. Unusually easy or difficult years can shift thresholds by 10+ marks.

- **Context**: These cutoffs target INO qualification (borderline to comfortable zone). OCSC selection (top ~300–350 all-India) typically requires General candidates to score 170+ marks (≥79%), well above qualification thresholds. Remember NSEA has no official category reservations in OCSC merit, but INO qualification itself may reflect these indicative bands.

Full cutoff page: https://shishya.in/exams/NSEA/cutoff

## Free resources on Shishya for this exam
- Exam hub (mocks, PYQs, news, dates): https://shishya.in/exams/NSEA
- Full syllabus + free study notes: https://shishya.in/exams/NSEA/syllabus
- Category-wise expected cutoffs: https://shishya.in/exams/NSEA/cutoff
- Memory tricks & mnemonics: https://shishya.in/exams/NSEA/tricks
- How to crack it (strategy guide): https://shishya.in/exams/NSEA/guide
- Free day-by-day study plan (personal coach): https://shishya.in/coach
- Free AI tutor (22 Indian languages, no login): https://shishya.in/chat

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