Explain Kepler’s law of planetary motion

A German astronomer, Johann Kepler, first stated the laws of planetary motion. The three laws of planetary motion are: The law of orbits: Every planet......

Stationary Satellite

The time period of rotation of some artificial satellites are the same as that of the earth. These satellites appear to be stationary to the......

Artificial Satellites

The spacecraft revolved around the earth about its prescribed orbits are known as artificial satellites. To revolve round the earth, the artificial satellites must be......

Gravitation and Gravity

Gravitation The force of attraction between any two bodies of the universe is called gravitation. The attraction between the sun and the earth is an......