Where did all the planets come from?
Simon Vilks from West Midlands (age 5-14)
How are planets made?
Sarah Afabor from Kent (age 5-14)
Abid Hossain + Jack Huang + Eddy Liou from Swansea (age 5-14)
How are planets formed?
Tom from Surrey (age 5-14)
Planets form from dust left over by the process of star formation.
Initially in the form of tiny grains like particles of cigarette smoke, these stick together and build up into lumps big enough to attract one another by gravity.