THE UNIVERSE || CLASS 9 SCIENCE || LIFECYCLE OF STARS || NEB ||

Here we discussed about the universe. Important for class 9 science Nepal, The universe, life cycle of stars , astronomical units used in astronomy, light year , black hole , nebula , red giant etc for class 9 science, NEB , Nepal. Please Like share and subscribe for more ! If you liked this video, don’t forget to follow me everywhere else too. I’m active on different apps—sharing updates, knowledge, and cool content regularly. Come say hi! My Handles Across Apps: Instagram:   / m.pgsir   Facebook:   / prazwalpg   TikTok:   / m.pgsir   💬 DM me anytime or drop a comment! ✨ Let’s stay connected across platforms and grow together! **** 00:00 - Introduction to The Universe & Celestial Bodies 03:22 - Astronomical Unit (AU) Explained 04:13 - Light Year (Calculation & Formula Breakdown) 07:44 - What are Stars? (Nuclear Fusion & Energy) 08:42 - What is a Black Hole? 10:48 - Formation of Stars (Nebula & Gravitational Collapse) 12:34 - Protostar (Early Stage of Star Formation) 14:46 - Main Sequence Stars (The Sun) 15:35 - Red Giant vs Red Supergiant 17:42 - Evolution & Nuclear Fusion in Aging Stars 19:25 - Planetary Nebula & White Dwarf 20:02 - Supernova Explosion 20:13 - Neutron Star vs Black Hole 21:38 - Summary: Complete Life Cycle of Stars 23:48 - Space Agencies: IAU, NASA & NAST -----