noctilucent

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Scientists claim these "noctilucent" clouds

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Examples (41)

  • The research, accepted for publication (June 24, 2009) by the journal Geophysical Research Letters, published by the American Geophysical Union, connects the two events by what followed each about a day later: brilliant, night-visible clouds, or noctilucent clouds, that are made up of ice particles and only form at very high altitudes and in extremely cold temperatures. —  PhysOrg.com - latest science and technology news stories
  • The researchers contend that the massive amount of water vapor spewed into the atmosphere by the comet's icy nucleus was caught up in swirling eddies with tremendous energy by a process called two-dimensional turbulence, which explains why the noctilucent clouds formed a day later many thousands of miles away. —  PhysOrg.com - latest science and technology news stories
  • Kelley and collaborators saw the noctilucent cloud phenomenon days after the space shuttle Endeavour (STS-118) launched on Aug. 8, 2007. —  PhysOrg.com - latest science and technology news stories
  • Kelley said he became intrigued by the historical eyewitness accounts of the aftermath, and concluded that the bright skies must have been the result of noctilucent clouds. —  PhysOrg.com - latest science and technology news stories
  • A British Airways pilot mentioned that these were high altitude noctilucent clouds. —  Gadling
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Etymologies (1)

Toggle Century etymologies Century Dictionary (1)

  1. from Latin nox (noct-), night, + lucere, shine: see lucent.
 

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/nɑktɪˈljusənt/
by American Heritage

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