Are we alone in the universe? For life to emerge and for a species like ours to proliferate is no easy feat. Luckily, Earth is located in an immense universe full of hypothetically habitable planets. And you might wonder, if it's possible for life to exist elsewhere in the cosmos, where have all the aliens gone?

• Author: Eva van den Berg 
• Illustrator: Ángel Svoboda
• Pages: 56
• Recommended age: 8 years and up.