One just launched the world’s biggest rocket, with mixed success. The other makes small model rockets for hobbyists, and it's ...

All those 60s, 70s, 80s and 90s kids out there may remember the classes of model rocket engines – generally A, B, C, and D sized engines used to push your cardboard tube with balsa fins skyward.

Stick an Estes motor in that thing and send it ... [Concrete Dog] has come up with HEXA, a clever model rocket kit that uses pre-scored cardstock instead. The immediate advantage is that this ...