Can we live on a different planet?
How might the discovery of life on another planet affect our actions here on Earth?
If you were to find life on Mars, what do you think it would look like?
If you were to meet an alien on another planet how would you describe humans on earth?
How can the logistical challenges of manned travel to Mars best be solved?
How come we can see just one side of the moon?
Does the sun rise in the east on all the planets in the Solar System?
What would happen if a gigantic meteorite hits the moon, causing a fundamental change in its orbit?
Why are planets round?
If I´m 10 years old, how old would I be on Mars?