Meanwhile, Musk tweeted that the problem was that a "grid fin hydraulic pump stalled, so Falcon landed just out to sea".
SpaceX chief Elon Musk said the booster appeared to be undamaged.
When SpaceX launched Falcon Heavy, which is essentially powered by three Falcon 9 rockets strapped together, the center booster didn't land as planned on a drone-ship in the Atlantic, though the two other rockets returned to ground safely.
The Space X rocket carrying food and other equipment soared out of the earth's atmosphere, but its booster fell away, missing its landing zone, and dropped into the sea. Instead of landing at Cape Canaveral as intended, the Falcon 9's booster went into the ocean. The booster remained intact, according to Musk, who said ships were sent out to recover the rocket.More news: Joshua calls out ‘fool’ Wilder and Fury
Experiments onboard the SpaceX Dragon capsule include studies on wound healing in space, as well as two studies by students inspired by Marvel's "Guardians of the Galaxy" will also launch to the orbiting laboratory. It should reach the space station Saturday.
The mission had been a complete success until the aborted landing. At that time, 4,000 pounds of returning cargo will make its way back down to the Pacific Ocean just off the coast from Baja, California. "Given this event, we will likely add a backup", Musk tweeted.
Rockets that veer out of control typically self-destruct using what's called an automated flight termination system, or AFTS. SpaceX changed that with its reusable rockets that are smart enough to perform soft landings, though not without failing many times before perfecting it. "It knows where buildings are, so it's pretty smart in that aspect", he said of the landing system on the booster. SpaceX redesigned those COPVs after a September 2016 pad explosion in order to meet NASA safety requirements for future commercial crew missions.
"A water-ditch landing is safer than an exploding rocket close to the ground", he told Business Insider. The Dragon spacecraft, which had previously been used for the CRS-10 mission in February of 2017, carried more than 2,540 kg (5,600 lbs) of supplies and payloads.
But in this case, nothing that'd be considered critical to NASA's mission - only SpaceX's convenience - seems to have gone wrong.