April 26, 2008

NASA's top 10 pictures for Earth Day

This green aurora showed up just after sunset in 2003


Aurora Borealis and lights shine over Finland, Russia, Estonia and Latvia in 2005


Notice the glaciers flowing from the Bernese Alps of Switzerland in this 2006 photo


To celebrate Earth Day yesterday, NASA released its ten favourite pictures taken by astronauts on the International Space Station.Above, Cleveland Volcano in the Aleutian Islands, Alaska, erupts. It lasted only hours and was captured by an Expedition 13 crew member in 2006. See below for the nine other images


In this 2003 photo from Expedition 7, you can see layers of the Earth's atmosphere. The orange troposhere is the lowest and most dense section. The tropopause is the section between the troposphere and the blue atmosphere


The moon appears through a halo, called the limb, which covers the Earth. As seen in 2001


This volcanic region of Saudi Arabia is known as Harrat Khaybar, as seen in a 2008 photo. Volcanoes flowed in the north-south vent system over the past 5 million years, though the most recent eruption was between 600 AD and 700 AD


This Los Angeles-at-night photo was taken in 2003. Hollywood is at the bottom, and the bright lights in the north are from the port facilities at Long Beach Naval Shipyards and Los Angeles International Airport. The brightest lights near the centre are from Disneyland

Nukuoro Atoll is one of 607 islands that make up the Federated States of Micronesia, as shown in this 2006 photo. About 900 people live on this atoll, whose lagoon is less than four miles wide

The height of Mount Everest and the Himalayas makes this 2004 photo look as if it came from an airplane

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