The noctilucent eyes of a cat.    From Wordnet, Princeton University. 

The clouds are intended to simulate naturally-occurring phenomena called noctilucent clouds, which are the highest clouds in the atmosphere.    From Wordnik.com.  [Latest Articles] Reference

That route saves fuel and avoids high-altitude ice clouds, called noctilucent clouds, that form during the summer between 50 degrees and 70 degrees north and south of the equator.    From Wordnik.com.  [China Post Online - Taiwan , News , Taiwan newspaper]

"noctilucent" clouds have become more common in the past 50 years.    From Wordnik.com.  [New Scientist - Online News] Reference

Mesosphere: Metalic atoms, noctilucent clouds, -100 C or so.    From Wordnik.com.  [Water Vapor Feedback « Climate Audit] Reference

I have no desire for noctilucent, evanescent aerial Cthulus, thank you.    From Wordnik.com.  [Posthuman Blues] Reference

During that time we observed radar soundings consistent with noctilucent clouds.    From Wordnik.com.  [WHAT REALLY HAPPENED] Reference

I also talked about water vapor and clouds formed from ice crystals noctilucent clouds in the stratosphere.    From Wordnik.com.  [National Post Today « Climate Audit] Reference

As the sun rose in the morning, remnants of the explosion were visible as noctilucent clouds over the region.    From Wordnik.com.  [Video of Utah Fireball | Universe Today] Reference

The occurrence of noctilucent clouds will be studied during the competition.    From Wordnik.com.  [BBC News | News Front Page | UK Edition] Reference

The CARE will be the first space viewing of an artificial noctilucent cloud.    From Wordnik.com.  [American Chronicle] Reference

The experiment is the first attempt to create artificial noctilucent clouds.    From Wordnik.com.  [Latest Articles] Reference

A British Airways pilot mentioned that these were high altitude noctilucent clouds.    From Wordnik.com.  [Gadling] Reference

Large volumes of this ice create the displays of noctilucent clouds we see on Earth.    From Wordnik.com.  [BBC News | News Front Page | UK Edition] Reference

The prediction of when noctilucent clouds will occur is based on the so-called five-day.    From Wordnik.com.  [BBC News | News Front Page | UK Edition] Reference

Regarding noctilucent clouds and VHF / UHF propagation, Roger Swickis, VE7BZR, of Gibsons.    From Wordnik.com.  [ARRL Amateur Radio News] Reference

Remember the fools who mistook artificial noctilucent cloud exhaust formations of 4th stage NASA HAHA!.    From Wordnik.com.  [Mensa Barbie Welcomes You] Reference

Ice in the Mesosphere (AIM) satellite has captured five complete polar seasons of noctilucent (NLC) or.    From Wordnik.com.  [WN.com - Articles related to Second stalled wheel spells doom for NASA's Mars rover] Reference

The eruption affected global climate and weather for years and may have produced the first noctilucent clouds.    From Wordnik.com.  [Latest Articles] Reference

These metal atoms settle into a thin layer of vapor that sits just above the altitude at which noctilucent clouds occur.    From Wordnik.com.  [Signs of the Times] Reference

The eerie, "noctilucent clouds" clouds form at the edge of space, far higher in the atmosphere than more familiar clouds.    From Wordnik.com.  [BBC News | News Front Page | UK Edition] Reference

For example, one group of scientists is studying the formation of glowing clouds at high altitudes called "noctilucent clouds.".    From Wordnik.com.  [Original Signal - Transmitting Digg] Reference

It was a close call between John Rowlands 'study of noctilucent clouds, and an entry by art gallery owner Shane Record from Kent.    From Wordnik.com.  [BBC News | News Front Page | UK Edition] Reference

Each summer, high in the night skies of the far northern and southern hemispheres a unique phenonmenon occurs - noctilucent clouds.    From Wordnik.com.  [BBC News | News Front Page | World Edition] Reference

"Night shining" clouds, or shimmering noctilucent clouds, are very thin and wispy, which makes them almost invisible during the day.    From Wordnik.com.  [Gaea Times (by Simple Thoughts) Breaking News and incisive views 24/7] Reference

It is thought that the increase in brightness and frequency of noctilucent clouds over past decades may be linked to global warming.    From Wordnik.com.  [BBC News | News Front Page | UK Edition] Reference

Bellan ... now has an explanation: the ice grains in noctilucent clouds are coated with a thin film of metal, made of sodium and iron.    From Wordnik.com.  [Latest Articles] Reference

The light came from an artificial noctilucent cloud formed by the exhaust particles of the rocket's fourth stage about 173 miles high.    From Wordnik.com.  [CNN.com] Reference

He'll be talking about his project with cloud-spotter John Rowlands to study noctilucent clouds as part of a feature for the programme.    From Wordnik.com.  [Media Newswire] Reference

Kelley and collaborators saw the noctilucent cloud phenomenon days after the space shuttle Endeavour (STS-118) launched on Aug. 8, 2007.    From Wordnik.com.  [PhysOrg.com - latest science and technology news stories] Reference

NASA hopes the experiment will provide information on the formation and properties of noctilucent clouds, which occur at high altitudes.    From Wordnik.com.  [KSL / U.S. / National] Reference

Then the mesosphere becomes too warm for the clouds to form and they will disappear until the noctilucent cloud season returns next summer.    From Wordnik.com.  [BBC News | News Front Page | UK Edition] Reference

Rarer cloud types such as noctilucent.    From Wordnik.com.  [Boing Boing] Reference

See noctilucent clouds.    From Wordnik.com.  [Archive 2008-12-01] Reference

"... now has an explanation: the ice grains in noctilucent clouds are coated with a thin film of metal, made of sodium and iron.    From Wordnik.com.  [Latest Articles] Reference

Scientists claim these "noctilucent" clouds.    From Wordnik.com.  [Lead Stories from AOL] Reference