NASA beams up a repair kit

 作者:屈突穴绮     |      日期:2019-03-07 03:18:05
By Jeff Hecht NEXT week, NASA engineers will transmit new software to the ailing Deep Space 1 probe in a last-ditch attempt to set it on course for a rendezvous with Comet Borrelly in September 2001. Borrelly is one of the most active short-period comets in the Solar System. NASA’s $152 million probe flew by Asteroid Braille in July and later took pictures of Mars. Controllers at the Jet Propulsion Laboratory (JPL) in Pasadena, California, had hoped to extend the mission to include Comet Wilson-Harrington next March. But when Deep Space 1’s star-tracking camera failed,