Introduction - Concepts - Chapter 1 Class 6 Geography - The Earth and the Solar System - Geography

Last updated at Dec. 13, 2024 by

Milky Way Galaxy - Teachoo.png

Milky Way galaxy from the Earth - Teachoo.png

  • Objects we observe in the sky are called heavenly bodies or celestial bodies.
  • Celestial bodies include stars, planets, satellites, asteroids, comets, and meteors.
  • The universe originated around 2000  crore years ago from a singularity, due to the Big Bang.
  • The Big Bang theory explains the expansion of the universe from a hot, dense state to its current state of vastness and relative coolness.  
  • A galaxy is a huge system of billions of stars, dust, and gases. There are millions of galaxies in the universe . 
  • Sun and all the other stars that we observed in the night belong to a Milky Way galaxy or Akash Ganga.
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Davneet Singh

Davneet Singh has done his B.Tech from Indian Institute of Technology, Kanpur. He has been teaching from the past 14 years. He provides courses for Maths, Science and Computer Science at Teachoo