Best Of Elon Musk on Instagram: "SpaceX's Falcon 9 rocket had a remarkable journey in achieving successful landings after several attempts and failures. The breakthrough came on December 21, 2015, when Falcon 9 successfully landed back on solid ground at Cape Canaveral after launching a set of satellites into orbit. This marked the first time in history that an orbital-class rocket booster was successfully recovered and reused, a significant milestone in the pursuit of more cost-effective space