Elon Musk’s private spaceflight company is going to take another swing at history today: for the first time, SpaceX plans to take a Falcon 9 rocket that successfully launched and landed in April 2016 and try to launch it to space once again, according to The Verge.
The launch window opens at 6:27PM ET and runs until 8:57PM ET, and SpaceX will live stream the attempt on its YouTube channel.
Watch the launch below:
SpaceX has spent the last year carefully evaluating and refurbishing this particular Falcon 9. In total, the company has landed eight rockets in 13 attempts since December 2015. Should the launch go off without a hitch, the company will also attempt to land the rocket on a drone ship in the ocean for the second time. If the landing is successful, SpaceX will most likely try to refurbish the rocket again in order to try and launch it a third time.
Ideally, this is a proof-of-concept for reusing rockets, one of Elon Musk’s main goals for SpaceX. By recovering each rocket after launch instead of discarding it, Musk hopes to cut the cost of a rocket launch by millions of dollars. This could eventually allow SpaceX to offer launches at a 30 percent discount, which is a huge advantage in the tiny but hyper-competitive space launch market.
SpaceX isn’t the only company working on reusability. Amazon founder Jeff Bezos’ space company Blue Origin has successfully launched, landed, and relaunched the same New Shepard vehicle multiple times. The two companies are after different short-term goals, though — Blue Origin is working toward offering space tourism rides to the boundary of space in while SpaceX already has paying customers who need a ride to much higher heights.