As you might have guessed, fins are used on rockets in order to keep them stable while in flight. At least in the case of model rockets and military ordinance.

The rocket is now being prepared for a launch during a tight window on Saturday morning, from 7 to 7:20 am local time. Here's an explanation of why grid fins are so important to the rocket's ...

Yes, they look like SpaceX rocket fins. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. The Long March 2C at Xichang Satellite Launch Center.