of ayatollah khomeini on iranian soil. south africa's white government has offered its black opponents concessions unparalleled in the history of apartheid, and the anc leader nelson mandela is to be set free unconditionally. mission control: three, two, one... a countdown to a critical moment — the world's most powerful rocket ignited all 27 of its engines at once. and apart from its power, it's this recycling of the rocket, slashing the cost of a launch, that makes this a breakthrough in the business of space travel. two americans have become the first humans to walk in space without any lifeline to their spaceship. one of them called it "a piece of cake". thousands of people have given i the yachtswoman ellen macarthur a spectacular homecoming - in the cornish port of falmouth after she smashed the world record i for sailing solo _ around the world, non—stop. this is bbc news, the latest headlines: