SpaceX waves off space station cargo delivery for a day
SpaceX's Dragon supply ship, loaded with nearly 5,500 pounds of cargo
and experiments, aborted an approach to the International Space Station on
Wednesday after encountering a problem in its GPS navigation
system.
The gumdrop-shaped, solar-powered spacecraft was about 1,200 feet, or
365 meters, from the space station when it automatically bailed out of the
rendezvous, escaping the immediate vicinity of the research outpost as its
safety system intended and setting up for another approach as soon as
Thursday.
NASA said SpaceX's mission director at the Dragon control center in
Hawthorne, California, reported the aborted rendezvous at 3:25 a.m. EST (0825
GMT) when the spacecraft ran into trouble processing GPS navigation
data.
"The SpaceX engineers are tracing this issue to an incorrect value
that was detected in the spacecraft's Relative Global Positioning System
hardware, which basically tells Dragon's computers, for its burn plan, where it
is in the sky relative to the International Space Station," said Rob Navias, a
NASA spokesperson providing commentary on NASA TV.
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