Fact 1:The solar system is 4.5 billion years old
Fact 2:The solar system moves at 200,000 kilometres per hour
Fact 3: The sun is at the centre of the solar system
Question 1: How many planets in the solar system are extremely hot?
Question 2: How long has the big red dot been raging on Jupiter?
Understanding: I understand that if humans could live on Mercury, it would be very hard to.