Most simple rockets use a solid fuel engine which, once ignited, burns at a steady rate that cannot be controlled or stopped until the fuel is expended. Hybrid engines on the other hand can be turned ...

Have some out of this world fun with these easy and affordable outer space crafts for kids. From rocket ships to UFO's, these projects will capture their imaginations and provide hours of ...

[Simon], a gardener in the United Kingdom, created this super cheap and easy to build rocket stove ... anyone should be able to quickly make their own for just a few bucks. If nothing else ...