Washington - NASA's embattled chief was criticised yesterday over a failed Mars mission but told a Senate panel he planned no changes in the US space agency's "cheaper, faster, better" approach.
Mr Daniel Goldin, who heads the National Aeronautics and Space Administration, denied reports that the agency tried to cover up a problem with braking thrusters on the unmanned Mars Polar Lander craft. The craft went astray on December 3rd as it started its descent to Mars.
