Galaxy Galaxy
Study guide for Galaxy under Physics Cosmic Physics for UPSC Civil Services Preparation. Study guide for Galaxy under Physics Cosmic Physics for UPSC Civil Services Preparation.
Galaxy
A galaxy is a massive, gravitationally bound system consisting of stars, stellar remnants, interstellar gas, dust, and dark matter, held together by mutual gravitational attraction.
Importance in UPSCUPSC में महत्व
Essential for UPSC CSE Prelims (Cosmic Physics, Astronomy, Space Missions) and Mains GS Paper III (Science & Technology - Awareness in the fields of Space and Astrophysics).
Learning Outcomesसीखने के परिणाम
- Master foundational concepts and morphological classifications of galaxies.
- Evaluate spatial distribution, Local Group dynamics, and cosmic evolution.
- Apply high-yield mnemonics to solve tricky Prelims and Mains questions.
Prerequisitesआवश्यक शर्तें
- Basic Newtonian gravity
- Stellar evolution and life cycle of stars
- Cosmology fundamentals