Some cool space images:

Milan, Italy at Night (NASA, International Space Station, 02/22/11)

Image by NASA’s Marshall Space Flight Center
The metropolitan area of Milan (or Milano) illuminates the Italian region of Lombardy in a pattern evocative of a patchwork quilt. The city of Milan forms a dense cluster of lights in this astronaut photograph, with brilliant white lights indicating the historic center of the city where the Duomo di Milano (Milan Cathedral) is located. Large dark regions to the south (image left) contain mostly agricultural fields. To the north, numerous smaller cities are interspersed with agricultural fields, giving way to forested areas as one approaches the Italian Alps (not shown). Low, patchy clouds diffuse the city lights, producing isolated regions that appear blurred. The Milan urban area is located within the Po Valley, a large plain bordered by the Adriatic Sea to the south and the Italian Alps to the north. Milan has the largest metropolitan area in Italy, and the fifth largest in the European Union. It is one of Europe’s major transportation, industrial, and commercial hubs, and is also a global center of fashion and culture. It is considered an “alpha” world city by the Globalization and World Cities Research Network.

Image credit: NASA

Original image/caption:
earthobservatory.nasa.gov/IOTD/view.php?id=49625

More about space station research:
www.nasa.gov/mission_pages/station/research/index.html

There’s a Flickr group about Space Station Research. Please feel welcome to join! www.flickr.com/groups/stationscience/

Detail: Harrat Khaybar, Saudi Arabia (NASA, International Space Station Science, 03/31/08)

Image by NASA’s Marshall Space Flight Center
I thought this was a cool detail area of the previous photo…

Harrat Khaybar, Saudi Arabia is featured in this image photographed by an Expedition 16 crewmember on the International Space Station. The western half of the Arabian peninsula contains not only large expanses of sand and gravel, but extensive lava fields known as haraat (harrat for a named field). One such field is the 14,000-square kilometer Harrat Khaybar, located approximately 137 kilometers to the northeast of the city of Al Madinah (Medina). According to scientists, the volcanic field was formed by eruptions along a 100-kilometer long north-south linear vent system over the past 5 million years; the most recent recorded eruption took place between 600 – 700 A.D. Harrat Khaybar contains a wide range of volcanic rock types and spectacular landforms, several of which are represented in this view. Jabal al Quidr is built from several generations of dark, fluid basalt lava flows; the flows surround the 322–meter high stratovolcano (Jabal is translated as "mountain" in Arabic). Jabal Abyad, in the center of the image, was formed from a more viscous, silica-rich lava classified as a rhyolite. While Jabal al Quidr exhibits the textbook cone shape of a stratovolcano, Jabal Abyad is a lava dome — a rounded mass of thicker, more solidified lava flows. To the west (top center) is the impressive Jabal Bayda’. This symmetric structure is a tuff cone, formed by eruption of lava in the presence of water. This leads to the production of wet, sticky pyroclastic deposits that can build a steep cone structure, particularly if the deposits consolidate quickly. White deposits visible in the crater of Jabal Bayda’ (and two other locations to the south) are formed from sand and silt that accumulate in shallow, protected depressions. The presence of tuff cones — together with other volcanic features indicative of water — in the Harrat Khaybar suggest that the local climate was much wetter during some periods of volcanic activity. Today, however, the regional climate is hyperarid — little to no yearly precipitation — leading to an almost total lack of vegetation.

Image credit: NASA

Read full caption:
spaceflight.nasa.gov/gallery/images/station/crew-16/html/…

More about the Crew Earth Observation experiment aboard the International Space Station:
www.nasa.gov/mission_pages/station/science/experiments/CE…

More about space station science:
www.nasa.gov/mission_pages/station/science/index.html

I’m starting a new Flickr group about Space Station Science. Please feel welcome to join! www.flickr.com/groups/stationscience/

You can also get Twitter updates whenever there’s a new image:
www.twitter.com/nasa1fan