When building a model rocket, it can be fun to get into the maths of it all—calculating the expected performance of your build, and then seeing how it measures up in the real world. To aid in that ...

What did you learn at school today, Billy? What's that? You built a rocket-powered car and raced it around the playground? What are they teaching you nowadays? The reason schools have gone all Top ...

There is a reason building a rocket engine is harder than most things you want to build. If you are building, say, a car, your goal is to not have it explode. If you are building a bomb, you want that ...