As you can tell from air launch not dominating the market, there are minuses to it, too. Pegasus has extra mass because it's got aerodynamic surfaces that tradi

As you can tell from air launch not dominating the market, there are minuses to it, too. Pegasus has extra mass because it's got aerodynamic surfaces that traditional rockets don't need. And it takes a lot of gear at the remote airstrip to support the launch. https://spaceflightnow.com/2018/06/08/airplane-with-pegasus-rocket-returning-to-california-postponing-nasa-satellite-launch/ https://spaceflightnow.com/2018/06/08/airplane-with-pegasus-...