Solid planets - Earth & Universe (in tamil)

Lesson 3 of 5 • 1 upvotes • 10:48mins

Karthick Selvaraj

universe has unlimited size and unknown shape. All the existing things include galaxies, planets, satellites, comets, and meteors. The solar system is located in Milky Way galaxy. The Milky Way galaxy is a medium sized galaxy, which consists of about 150 billion of stars. Astronomers believe that there are 1012 such galaxies in the universe. Astronomical unit (AU), Lightyear (LY) and parsec are used to measure the distance in the universe. Here in this course I am going to explain Solid Planets