A cloud of gas and dust in the space between stars is called a ____________.
Milky way
Rotation
Nebula
Revolution
Name the planet which complete its revolution in a short time.
Venus
Mercury
Earth
Neptune
___________ is far away from the sun.
There are _________ planets in the solar system.
Six
Seven
Eight
Ten
____________ is the source of all energy in the solar system.
Moon
Sun
_____________ is the centre of the solar system.
Star
____________ rotates the fastest.
Jupiter
Uranus
____________ is the hottest planet.
_____________ is the 'family of the sun'.
Orbit
Solar system
Galaxy
___________ is the smallest planet in the solar system.
Mars
Saturn