What is In-situ resource utilization (ISRU)?

In-situ resource utilization (ISRU) is when we use resources found right where we are, instead of bringing everything from Earth.

Imagine you're building a treehouse in your backyard, but instead of carrying all the wood and nails from your house, you just use the trees and rocks already there. That’s like ISRU, using what's around you to make things easier.

Suppose you're on another planet, like Mars. Instead of bringing all the ingredients for pizza from Earth, you could use soil or rocks from Mars to help make your pizza base or even the cheese! It’s like having a kitchen that uses local stuff, no need to carry everything from home.

Using ISRU means we don’t have to bring as much stuff from Earth. That saves space, time, and money, kind of like how you save money when you use your piggy bank instead of buying candy every day.

ISRU is a smart way to make life easier on other planets, using what’s already there.