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 ...

When a SpaceX Starship rocket went up in a fiery explosion in June 2025, it amplified criticism regarding the company's recent string of test failures. This was the fourth straight failure of the Elon ...

Dear Johnnie: 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. Fire danger was the reason given. I didn’t know that concrete ...