Astronomy and space science

1

Which is the correct order, starting with the smallest and ending with the largest?

2

Which is the third planet from the Sun?

3

Which force keeps the planets in orbit?

4

Why does an astronaut weigh less on the Moon than on the Earth?

5

What is the weight of a 20kg box on the Earth?

6

The orbits of the planets are:

7

The further away from the Sun:

8

Why is a day on Mars about 37 minutes longer than a day on Earth?

9

In which direction does the Earth spin?

10

Why do we have seasons on Earth?