Despite the amount of preserved lava flows situated at its base might suggest, the Aracar Volcano, located east of the Argentina-Chile border, has been inactive for a long time. Saltwater wetlands, temporary marshes, salt lakes, and salt crust comprise the white areas (called "Salars") pictured near the top. NASA/JPL/UCSD/JSC
It’s the 40th anniversary of Earth Day today. To honor our beloved planet, it’s nice sometimes to stop and envy the view enjoyed by such a tiny slice of humanity: the astronauts. Here we’ve compiled some of our favorite views of Earth from space.
Click to launch the photo gallery
In addition to more conventional images taken from spacecraft and satellites, we’ve also included more data-rich visualizations of the sort that continue to help us understand our great planet.
Launch the gallery above for images of earthquakes, fires, sunsets, ice shelves and more. Happy Earth Day!
Aracar Volcano, Andes Mountains
Despite the amount of preserved lava flows situated at its base might suggest, the Aracar Volcano, located east of the Argentina-Chile border, has been inactive for a long time. Saltwater wetlands, temporary marshes, salt lakes, and salt crust comprise the white areas (called “Salars”) pictured near the top.
Summer and Winter in James Bay
James Bay, which is situated in the Onatario-Quebec region of Canada, is a starkly different place during summer and winter. Both of these pictures were taken by the Terra Satellite and acquired by the MISR.
Total Solar Eclipse
The Expedition 12 crew, who were completing a six-month mission on the International Space Station, took this photo of a total solar eclipse during the early hours of March 29, 2006. They captured the image roughly 230 miles above Earth.
The MISR’s images of polar clouds above the South Indian Ocean illustrate their circulation at multiple altitudes. Heights can range from less than 2 kilometeres to about 8 kilometers. On the left, the purple, cyan and green hues signify low, medium, and high altitudes, respectively. The right-hand photo is a natural-color image taken with MISR’s 70-degree backward viewing camera, which uses the reflection of light to enhance the polar clouds’ appearance.
Solar Polar Projection of Earth
Researchers pieced together photos taken by Galileo over a 24-hour period to construct this image of Antarctica. Scientists used Galileo’s photos to distinguish between ice and high stratospheric clouds, which in turn helped researchers study the relationship between these clouds and the growth of the ozone layer.
South Pacific’s Home Reef Reborn
This simulated natural color image shows Home Reef, located near the Tofua volcanic arc in Tonga, reemerging after a volcanic eruption in August 2006. Although the island originally appeared after a similar eruption in 2004, it ceased to be visible in November 2005. The green color indicates vegetation on Late Island, while Home Reef can be seen on the lower left. The blue represents hot seawater mixed with volcanic ash and other chemicals.
Namibia’s Burning Mountain
Daures (“Burning Mountain”), also called the Brandberg Massif, is the highest mountain in Namibia. The mountain originated 120 million years ago when underground volcanic activity pushed a granite deposit to the earth’s surface. The feldspar found in granite gives the Brandberg Massif a reddish appearance during sunset.
Path of a Tornado in La Plata, Maryland
These images acquired by NASA’s Terra satellite Advanced Spaceborne Thermal Reflection Radiometer (ASTER) reveal the path of an F5 tornado that tore across La Plata, Maryland, in April 2002. The first image was taken in May 2001 and the second in May 2002. The red indicates vegetation, while the blue indicates bare fields and urban areas. The dark turquoise streak visible in the bottom image represents the the scarring left by the tornado.
Wilkins ice Shelf
The Wilkins Ice Shelf, which is located on the western side of the Antarctic Peninsula, experienced heavy disintegration in April 2009 after the ice bridge connecting the ice shelf to Charcot Island fell apart. Images taken by ASTER following the disintegration indicate that despite the damage, it will take awhile for the ice shelf to completely move away.
Morning Sun on the Gulf of Mexico
In this photo taken from the Apollo 7 spacecraft, the morning sun glimmers on the Gulf of Mexico and the Atlantic Ocean.
Flooding in Dongting Lake, China
These two images taken by ASTER show the transformation of China’s Dongting Lake after the Yangtze River flooded over in August 2002. The image on the right was acquired in March 2002, prior to the flooding, while the image on the left was taken a month after the river began to overflow.
Willow Fire Near Payson, Arizona
This image acquired by ASTER uses data from the visible and infrared wavelenth regions to emphasize the damage inflicted near Payson, Arizon, by the Willow fire in 2004. The active fires are represented in orange, the burnt areas in red, the smoke in blue, and the vegetation in green.
Tsunami Devastates Aceh, Indonesia
The tsunamis that devastated Asia in December 2004 hit Aceh, Indonesia, where waves destroyed towns and vegetation near the northwestern coast of Sumatra. These images taken by Space Imaging’s Ikonos satellite show the region before and after the disaster.
Global Cumulative Earthquake Activity
The image is one in a series of animations intended for the HoloGlobe exhibition at the Smithsonian Museum. The yellow dots represent earthquake activity that occurred between 1960 and 1995.