Asteroids

This video explains about  asteroids and their existence in the universe. How they are formed. A gap that is occupied by a large number of small objects that revolve around the Sun. These are called asteroids.

Comets

This video explains about   comets and what they are made of.Comets are huge masses of ice, dust and organic matter.

Difference between Meteoroids, Meteors, and Meteorites

This video explains about  difference between Meteoroids, Meteors, and Meteorites.  meteoroid is a piece of interplanetary matter that is smaller than a kilometer.

Artificial Satellites

This video about Artificial Satellites. The motion of a satellite or space-station is a direct consequence of Earths gravity. Once launched in the appropriate orbit, these man-made crafts orbit around Earth without any propulsion.