23/04/2025
Happy belated Earth Day, because we believe the Earth should be celebrated every day.
1. Aster Waves (PIA02662)
The pattern on the right half of this image of the Bay of Bengal is the result of two opposing wave trains colliding. This ASTER sub-scene, acquired on March 29, 2000, covers an area 18 kilometers (13 miles) wide and 15 kilometers (9 miles) long in three bands of the reflected visible and infrared wavelength region. The visible and near-infrared bands highlight surface waves due to specular reflection of sunlight off of the wave faces.
2. Tristan da Cunha Island (PIA22506)
Tristan da Cunha is both a remote group of volcanic islands in the south Atlantic, and the main island. It is the most remote inhabited island group in the world, 2400 km from the nearest inhabited land. Tristan has a population of about 250 inhabitants, and is part of the British overseas territory of Saint Helena, Ascension and Tristan da Cunha. In 1961 the eruption of Queen Mary’s Peak forced the evacuation of the entire population for two years. The image was acquired October 7, 2017, and is located at 37.1 degrees south, 12.3 degrees west.
3. Cotahuasi Canyon, Peru (PIA24943)
Cotahuasi Canyon, near the city of Arequipa, Peru, is one of the deepest canyons in the world. It reaches a maximum depth of 3,350 m, twice as deep as the Grand Canyon. Volcanic peaks nearby reach altitudes of over 6,000 meters. The perspective view is draped over an ASTER DEM, and projected with no vertical exaggeration. The image was acquired August 30, 2019, and is located at 15.3 degrees south, 73 degrees west.
Creator credits: NASA/GSFC/METI/ERSDAC/JAROS/AIST/Japan Space Systems, and U.S./Japan ASTER Science Team.
