ELI5: Explain Like I'm 5

Other worlds strategy

Have you ever played a game where you are the leader of a city or country? Well, imagine that you are the leader of a group of people who live on a planet. This planet is called Earth, and it's where you live right now!

Now, what if I told you that there are other planets out there in the universe? Some of these planets might be very different from Earth. They might have different plants, animals, and even different kinds of people living on them.

The other worlds strategy is all about exploring these other planets and seeing if they might be good places for us humans to live someday. To do this, we need to send spaceships and robots to these other planets to learn as much as we can about them.

We need to find out things like:
- What is the planet made of?
- Is there water on the planet?
- Does it have an atmosphere (the layer of gases surrounding a planet)?
- Are there any signs of life on the planet?

Once we learn all of these things, we can figure out if people could live on the planet someday. Maybe we could even start new cities or countries on these other planets!

So, the other worlds strategy is all about exploring and learning about these other planets so we can decide if they would be good places for us to live. It's like playing a giant game of exploring and discovering new worlds!