There has been no signal detected from the surface of Mars on Friday that would indicate the UK-built Beagle 2 lander got down safely. The US orbiter Mars Odyssey flew over the assumed landing zone just after 1800 GMT but heard no transmission. The giant radio telescope at Jodrell Bank in northwest England has been left to listen to the planet for several hours in the hope it can find Beagle. Scientists refuse to give up hope and will continue to scan Mars for a call.