Please consider donating to Behind the Black, by giving either a one-time contribution or a regular subscription, as outlined in the tip jar to the right. Your support will allow me to continue covering science and culture as I have for the past twenty years, independent and free from any outside influence.
Link here. The article has some additional excellent images, but it was this paragraph that I thought was most significant:
To oversimplify, after launch, the payload fairing separates (mechanically) from the second stage once Falcon 9 or Heavy has left behind the majority of Earth’s atmosphere. After separation, each fairing half orients itself for a gentler reentry into the atmosphere with cold nitrogen gas thrusters, likely the exact same thrusters used in part to achieve Falcon 9’s accurate and reliable landings. Due to their massive surface area and comparatively tiny weight, fairing halves effectively become exceptionally finicky and awkward sails falling through the atmosphere at insane velocities, with the goal generally being to orient each half like a boat’s hull to provide some stability. Once they are low enough, assuming they’ve survived the journey from TEN TIMES THE SPEED OF SOUND and 62 MILES above Earth’s surface to a more reasonable ~Mach 0.5 and maybe 5 miles of altitude, the fun parts begin. At this point, each fairing half deploys a GPS-connected parachute system (a parasail, to be exact) capable of directing the massive hunks of carbon fiber and aluminum to a very specific point on the surface of the ocean.
What we don’t yet know is whether SpaceX will have cameras on the fairing, and if so, whether they will make those images available to the public, during launch.