SpaceX's Starship spacecraft has exploded after lifting off from Texas, dooming an attempt to deploy mock satellites in the second consecutive failure this year for Elon Musk's Mars rocket programme. Videos posted on social media show debris streaking through the skies near south Florida and the Bahamas. The rocket exploded after it began to spin uncontrollably with its engines cut off, a SpaceX livestream of the mission showed

• SpaceX’s Starship explodes in second failure for Musk’s Mars programme