KSP may be a great space flight sim, but it's not exactly realistic. If you've ever wanted to simulate a specific launch, developer Declan Murphy created a cool site to do it. Flightclub.io lets you input detailed staging information, specify launch sites, program events at specific times, then watch the whole thing unfold. There's also a page to view live launches. A video of a falcon heavy test flight can be seen here, and you can run that same simulation via a link to flightclub.io. Watch the trajectory for SpaceX's first ever Falcon Heavy launch! This mission comprised of 2 reused boosters (previously flown on Thaicom-8 and CRS-9) and a brand new center stage. The side boosters were successfully recovered for a second time, while the center stage failed to land on the ASDS "Of Course I Still Love You". The mission launched Elon Musk's Tesla Roadster to an elliptic orbit reaching deep into the asteroid belt, driven by a Starman in a SpaceX space suit.