Complete the sentence:-
 1-A
 is a cold mixture of dust and ice that gives up a long trail of light as it
 approaches the sun.
 2-Star is a giant ball of hot gas mainly composed of
 and
 3- A................... is a group of stars that people imagined to represent a figure, animal or object.
 4-
 is a body that orbits a planet. The moon is Earth's only
 satellite.
 5-......
 is an object that orbits around the sun due to force of gravitation. There are
 planets, among them
 are visible from the Earth without a telescope
 they are Mercury, venus, Mars, Jupiter, and Saturn.
 I
 6-A ............ is the streak of light produced when a small object burns up entering Earth's
 atmosphere. You can see a meteor on almost any night.
 Answer the questions