AVIATION DISASTER The American Institute of Aeronautics' first official UFO conference Thom Dunn

amateur science Model rocketry in the 21st century Gareth Branwyn

rocket launch See-thru rockets are GO for launch! Gareth Branwyn

beidou A spent Chinese rocket booster destroyed part of a village near the launching site Thom Dunn

aerospace engineering This 3D printed titanium fuel tank part shaved 18 months off spacecraft production schedule Andrea James

aerospace engineering It took 83 engines to get to the moon Andrea James