SpaceX is making an historic first on Wednesday, when it gets one step closer towards realizing its vision of reusable space launch gear. The private space company is launching a space station resupply mission using a refurbished Dragon spacecraft and a previously-flown Falcon 9 booster. Dragon will spend around a month at the International Space Station unloading supplies and filling up with return cargo before returning to Earth, while SpaceX plans to recover Falcon 9 by landing it at its LZ-1 facility at Cape Canaveral. Both parts have been used on other resupply missions before, and if SpaceX’s dreams come to fruition, they’ll be used again. Watch them blast off live on Wednesday December 13 at 11:24 AM EST (08:24 AM PST).