Rocket:
Source: NASA, SpaceX, ULA
Photos: NASA, SpaceX, ULA; Interactive: Roque Ruiz / NBC News
America’s mightiest rockets
SpaceX’s Falcon Heavy is one of the biggest rockets ever developed. Here’s how it stacks up to the mighty Saturn V and a sampling of other rockets NASA and U.S. firms have developed over the years.
Rocket:
Source: NASA, SpaceX, ULA
Photos: NASA, SpaceX, ULA; Interactive: Roque Ruiz / NBC News