Planet - Any of the nine large heavenly bodies revolving around the sun and shining by reflected light in the order of proximity to the sun.
Star - Any of the planets, except the moon, appearing as fixed points in the night sky.
Gravity - The force of attraction between masses.
Galaxy - Large system of stars held together by gravitation and isolated from similar systems by vast regions at space.
Milky Way Galaxy - Galaxy that contains the solar system.
Universe - Millions of galaxies
Mass - A body of coherent matter.
Weight - The amount of quanitity of heaviness or mass.
Natural satellite - is already made by nature e.g. moon.
Artificial satellite - is a man-made satellite.
Geostationary orbit - stays above same point on earth.
Polar orbit - a orbit that passes over the poles of the earth.
Comet - Streams away from the sun leaving a trail of dust behind and gas. It moves about the sun.
· Gravity is an attractive force that acts between all objects that has mass. The size of the force depends on the mass of the object.
· The force of gravity between two objects depends on the mass of the objects and also the distance between them.
· The greater the distance between the masses, the weaker the pull would be.
A satellite is any object that orbits another object. It is kept in orbit by gravity. The gravitational field strength…