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2007-04-12 17:01:09

Fourteen thousand feet above the vast fetch of the Pacific Ocean, Diana Blaney announces, "Guide Dog is ready. Big Dog is ready." "Roger," says telescope operator Paul Sears. "Guide Dog is on. Big Dog is on." So begins a night of Mars-watching at NASA's Infrared Telescope Facility atop Hawaii's dormant Mauna Kea volcano. Here, astronomers work by night to discover things that can't be seen by day. Big Dog is the software that controls the spectrometer that measures wavelengths of light....


Word of the Day
baudekin
  • A rich embroidered or brocaded silk fabric woven originally with a warp of gold thread.
'Baudekin' seems to be an alternative form of 'baldachin,' from the Italian 'Baldacco,' Baghdad, the city where the material was made.
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