[Valentin] is the MacGyver of model rocketry, building a small rocket out of three items many people have hanging around the house. Cat litter, matchsticks, and a ballpoint pen are the raw ...

One just launched the world’s biggest rocket, with mixed success. The other makes small model rockets for hobbyists, and it’s stockpiling supplies ahead of Trump’s tariffs. SpaceX’s ...

A few years back my son was given a ticket for launching a small Estes model rocket from a concrete pad in a Longmont park.