SpaceX has successfully caught the top part of its huge Starship rocket on its return to Earth for the first time. "Can you believe it?," a commentator said as large crowds cheered at the launch site in Texas. The company had hoped to catch both the bottom and upper stages of the rocket using mechanical arms - nicknamed chopsticks - on its launch tower. But the first catch of the rocket's booster was aborted a few minutes after the launch on Friday.