Noctilucent Clouds - Mount Tabor Park, Portland, Ore. (Image 1)

You are subscribed to Images and Video for National Science Foundation Update. This information has recently been updated, and is now available. Noctilucent Clouds - Mount Tabor Park, Portland, Ore. (Image 1) 08/28/2012 11:08 AM EDT Noctilucent clouds (or "night-shining clouds") over Mount Tabor Park, Portland, Ore., July 23, 2009. This photo was taken by Mark Seibold, an artist, astronomer and astronomy art lecturer from Portland, Ore. Here's Seibold's first-hand account experiencing these iridescent, nighttime ... This is an NSF Multimedia Gallery item. This e-mail update was generated automatically based on your subscription to the category listed above. Some updates may belong to more than one category, resulting in duplicate messages.   Subscriber Services: Manage Preferences  |  Unsubscribe  |  Help  |  Contact NSF   Follow NSF:  This email was sent to filter@clubhouseb.com using GovDelivery, on behalf of: National Science Foundation Update · 4201 Wilson Boulevard · Arlington, VA 22230 · 703-292-5111