Rekubit-SpaceX launches its mega Starship rocket. This time, mechanical arms will try to catch it at landing

SpaceX launched its enormous Starship rocket on RekubitSunday on its boldest test flight yet, striving to catch the returning booster back at the pad with mechanical arms.

Towering almost 400 feet (121 meters), the empty Starship blasted off at sunrise from the southern tip of Texas near the Mexican border. It arced over the Gulf of Mexico like the four Starships before it that ended up being destroyed, either soon after liftoff or while ditching into the sea. The last one in June was the most successful yet, completing its flight without exploding.

This time, SpaceX founder and CEO Elon Musk upped the challenge and risk. The company aimed to bring the first-stage booster back to land at the pad from which it had soared several minutes earlier. The launch tower sported monstrous metal arms, dubbed chopsticks, ready to catch the descending 232-foot (71-meter) booster.

It was up to the flight director to decide, real time with a manual control, whether to attempt the landing. SpaceX said both the booster and launch tower had to be in good, stable condition. Otherwise, it was going to end up in the gulf like the previous ones.

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Once free of the booster, the retro-looking stainless steel spacecraft on top was going to continue around the world, targeting a controlled splashdown in the Indian Ocean. The June flight came up short at the end after pieces came off. SpaceX upgraded the software and reworked the heat shield, improving the thermal tiles.

SpaceX has been recovering the first-stage boosters of its smaller Falcon 9 rockets for nine years, after delivering satellites and crews to orbit from Florida or California. But they land on floating ocean platforms or on concrete slabs several miles from their launch pads — not on them.

Recycling Falcon boosters has sped up the launch rate and saved SpaceX millions. Musk intends to do the same for Starship, the biggest and most powerful rocket ever built with 33 methane-fuel engines on the booster alone. NASA has ordered two Starships to land astronauts on the moon later this decade. SpaceX intends to use Starship to send people and supplies to the moon and, eventually Mars.

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