Why the third launch of SpaceX’s Falcon Heavy rocket has the highest stakes yet

6:15am PDT - June 24th, 2019    spacex launch - The Verge

The third flight of SpaceX’s Falcon Heavy is set for Monday, June 24th, and this launch is perhaps the most important one yet for the powerful rocket. The Falcon Heavy will be flying a mission for the Air Force known as STP-2 that’s ultimately meant to certif…