<div style="margin: 12px 0px; font-family: arial; color: #333333; background: #ffffff; border: solid 4px #e5e5e5; width: 100%; clear: left;"><div class="CM_CTB_Content_Wrap" style="margin: 0px; padding: 0px;background-color: #ffffff;"><div style="border-bottom: solid 1px #dcdcdc; white-space: nowrap; margin-bottom: 8px; background-color: #eeeeee ;background-image: url(http://clipmarks.com/images/source-bg.gif); background-repeat: repeat-x; height: 24px; line-height: 24px; vertical-align: middle; padding-bottom: 4px; color: #666666; font-size: 10px;" ><a href="http://clipmarks.com/clip-to-blog/" title="see clips that are hot right now"><img src="http://content.clipmarks.com/blog_embed/5032c930-e6ee-46e4-99ca-008576808607/5908DB66-20A9-45D2-AE03-6BE023545382/" alt="" width="19" height="19" border="0" style="vertical-align: middle; margin: 0px 4px; display: inline; border: none; float:none;" /></a>clipped from <a title="http://news.bbc.co.uk/1/hi/sci/tech/7137905.stm" href="http://news.bbc.co.uk/1/hi/sci/tech/7137905.stm" style="font-size: 11px;">news.bbc.co.uk</a></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://news.bbc.co.uk/1/hi/sci/tech/7137905.stm">Remarkable new images of Earth's highest and most mysterious clouds have been captured by a Nasa spacecraft</blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://news.bbc.co.uk/1/hi/sci/tech/7137905.stm"><FONT size="2">Noctilucent, or "night-shining", clouds appear as thin bands in twilight skies, some 80km (50miles) above the surface. </FONT></blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://news.bbc.co.uk/1/hi/sci/tech/7137905.stm"><div align="center"><img src="http://content7.clipmarks.com/blog_cache/news.bbc.co.uk/img/639B1217-38AC-47A9-93D7-8B15F1C16175" alt="Noctilucent clouds (Nasa)" /></div></blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://news.bbc.co.uk/1/hi/sci/tech/7137905.stm"><FONT size="2">The AIM probe has now returned the first truly global pictures of these phenomena which appear to be increasing in frequency and extent. </FONT></blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://news.bbc.co.uk/1/hi/sci/tech/7137905.stm"><table background="undefined" bgcolor=""><tr><TD class="sibtbg"><DIV class="o"> <IMG width="203" vspace="0" hspace="0" height="152" border="0" alt="AIM picture (Nasa)" src="http://newsimg.bbc.co.uk/media/images/44292000/jpg/_44292984_polarclouds_203.jpg" /> </DIV> <DIV class="mva">AIM is getting the first truly global view of the unusual clouds</DIV> <DIV class="o"> <IMG width="203" vspace="2" hspace="0" height="1" border="0" alt="" src="http://newsimg.bbc.co.uk/nol/shared/img/v3/inline_dashed_line.gif" /> </DIV> <DIV> <DIV class="mvtb"> <A href="http://www.bbc.co.uk/mediaselector/check/player/nol/newsid_7130000/newsid_7138000?redirect=7138030.stm&news=1&bbwm=1&nbwm=1&nbram=1&bbram=1&asb=1"> <IMG vspace="0" height="13" border="0" align="left" alt="" src="http://newsimg.bbc.co.uk/nol/shared/img/v3/icons/video_text.gif" /><B>Earth's highest clouds</B> </A> </DIV> </DIV> </TD></tr></table></blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://news.bbc.co.uk/1/hi/sci/tech/7137905.stm"><FONT size="2">They hope their studies will reveal the key triggers to the clouds' formation and why these triggers appear to be undergoing long-term change. </FONT></blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://news.bbc.co.uk/1/hi/sci/tech/7137905.stm">These clouds are getting brighter with time, they're seen more often and also they're being seen at lower latitudes</blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://news.bbc.co.uk/1/hi/sci/tech/7137905.stm"><FONT size="2">Sitting 600km above the Earth, the spacecraft has the perfect vantage point from which to study the clouds that are also sometimes referred to as Polar Mesospheric Clouds. </FONT></blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://news.bbc.co.uk/1/hi/sci/tech/7137905.stm"><div align="center"><img src="http://content8.clipmarks.com/blog_cache/news.bbc.co.uk/img/B4EE721C-DFED-4860-9D9C-4CAEAB44B364" alt="Noctilucent clouds (BBC)" /></div></blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://news.bbc.co.uk/1/hi/sci/tech/7137905.stm"><div align="center"><img src="http://content9.clipmarks.com/blog_cache/news.bbc.co.uk/img/C1B9D8A8-4747-4936-9E60-FD73AD93BEC7" alt="The AIM spacecraft (Nasa)" /></div></blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://news.bbc.co.uk/1/hi/sci/tech/7137905.stm">Noctilucent clouds need cold temperatures, the presence of water vapour, and small dust particles</blockquote></div><div style="margin: 0px 6px 6px 4px;"><table style="font-size: 11px;border-spacing: 0px;padding: 0px;" cellpadding="0" cellspacing="0" width="100%"><tr><td style="background:transparent;border-width:0px;padding:0px;">&nbsp;</td><td align="right" style="background:transparent;border-width:0px;padding:0px;width:107px" width="107"><a href="http://clipmarks.com/share/5908DB66-20A9-45D2-AE03-6BE023545382/blog/" title="blog or email this clip"><img src="http://content6.clipmarks.com/images/c2b-foot.png" border="0" alt="blog it" width="107" height="17" style="border-width:0px;padding:0px;margin:0px;" /></a></td></tr></table></div></div>

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