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Satellite constellation Reference Libraries

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Iridium satellite
2004-10-19 04:45:44

Iridium Satellite -- The Iridium satellite constellation is also a system of 66 active communication satellites and spares around the earth. Named for the element Iridium, it was originally to have 77 active satellites, but was later redesigned to have its current number, though the name was retained. Iridium allowed worldwide voice and data communications using handheld devices. The...

Word of the Day
call-note
  • The call or cry of a bird or other animal to its mate or its young.
'Call-note' is newer than 'bird-call,' which originally referred to 'an instrument for imitating the note of birds' but now also refers to 'the song or cry of a bird.'
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