Jude's Threshold

A Tapestry Blog of Astrology, Politics, Art, and Social Concerns

2009’s First Noctilucent Clouds!

Space Weather News for May 30, 2009

FIRST NLCs of 2009: The first noctilucent clouds (NLCs) of 2009 have been sighted over northern Europe. Last night, May 29, photographers recorded wispy electric-blue tendrils spreading across the twilight skies of Denmark, Northern Ireland and Scotland. This follows a similar display over Russia on May 27. These sightings signal the beginning of the 2009 NLC season, which is expected to last until late July. Early-season NLCs are usually feeble, but these were fairly bright and vibrant, suggesting that even better displays are in the offing.

Check today’s edition of Space Weather News for photos.

Noctilucent clouds are an unsolved puzzle. They float 83 km above Earth’s surface at the edge of space itself. People first noticed NLCs in the late 19th century. In those days you had to travel to high northern latitudes to see them. In recent years, however, the clouds have been sighted in the United States as far south as Oregon, Washington and even Colorado. Climate change, space dust, and rocket launches have all been cited as possible explanations for the phenomenon. Interestingly, low solar activity seems to promote the clouds, so the ongoing deep solar minimum could set the stage for a good season in 2009.

The best time to look for NLCs is just after sunset or just before sunrise when the sun is between 6 and 16 degrees below the horizon. That’s when the geometry is just right for sunlight to illuminate the tiny ice crystals that make up the clouds. Observing tips and sample photos may be found in the 2008 Noctilucent Cloud Gallery.
~:~
Zeeks! I just noticed that this is my 999th post on this blog and there have been 247,106 page views…thanks, All!

Advertisements
Zeebra Designs & Destinations

An Artist's Eyes Never Rest

NATIONAL ECLIPSE BLOG

The official blog of NationalEclipse.com

The Coyle Clan

The History & Memories of Coyle Clan-folk & Kin

Princes, Paupers, Pilgrims & Pioneers: Our Predecessors & Me

“There are two lasting bequests we can give our children: One is roots, the other is wings.” Teaching children values and giving them the opportunity to excel are essential to good parenting. However, I feel I must also provide my children (and myself) insight into the ones who came before us: our ancestors whose lives and stories have shaped us into who we are. This is my journey; these are their stories…

setinthepast

Historical novels, films and TV programmes

Shaking the tree

musings on the journey towards knowing and sharing my family's stories

Lost Dudeist Astrology

An Exploration of the Shadow Side of Lost Dudeists Everywhere: Astrology, Tarot, Metaphysics, Tinfoil Hat Conspiracy Stuff, Other Weird Stuff, and sometimes Fertility Goddess Icons (Scantily Dressed Pinup Girls)

All On The Illuminati

For you see, the world is governed by very different personages from what is imagined by those who are not behind the scenes

Moore Genealogy

Fun With Genealogy

Tired and Bored With Myself

Another option for wasting time

The Bone Dresser

...or, Adventures in Genealogy

Mary's Monday Matinee

Discovering the joy of film

Blogala Maho

RANDOM COMMENTARY ON ALL THINGS

Chips Off the Old Block

A blog devoted to genealogical wanderings - dedicated to family near and far, through distance and time

Benjamin Studebaker

Yet Another Attempt to Make the World a Better Place by Writing Things

%d bloggers like this: