One of the best-preserved craters on Earth lies deep within the Sahara Desert. On Asteroid Day, the Copernicus Sentinel-2 satellite mission takes us over the almost-perfectly circular Tenoumer Crater in Mauritania. Tenoumer Crater, visible in the center of the image, is 1.9 km (1.2 miles) wide.
Copernicus Sentinel-2 image captured on May 16, 2022, of Tenoumer Crater in Mauritania, one of the best-preserved craters on Earth. Credit: Contains modified Copernicus Sentinel data , processed by ESA,One of the best-preserved craters on Earth lies deep within the Sahara Desert. On Asteroid Day, the Copernicus Sentinel-2 satellite mission takes us over the almost-perfectly circular Tenoumer Crater in Mauritania.
Tenoumer Crater, visible in the center of the image, is 1.9 km wide. The rims of the crater rise some 110 m high above the base, but the bottom of the crater is covered with an approximately 200 to 300 m thick layer of sediments. Copernicus Sentinel-2 images of Tenoumer Crater in Mauritania, one of the best-preserved craters on Earth, captured on May 16, 2022. Visible in the center of the image, Tenoumer Crater is 1.9 km wide. The rims of the crater rise some 110 m high above the base, but the bottom of the crater is covered with an approximately 200 to 300 m thick layer of sediments.
The crater sits in a vast plain of rocks that are so ancient they were deposited hundreds of millions of years before the first dinosaurs walked Earth. Even though it resides in ancient rock, Tenoumer is much younger, ranging in age between 10,000 and 30,000 years old.This Sentinel-2 false-color image, captured on May 16, 2022, shows the arid landscape surrounding the crater which appears in varying shades of brown, tan, and orange.
Asteroid Day is the United Nations-sanctioned day of public awareness of the risks of asteroid impacts, held annually on 30 June. More than one million asteroids have been discovered in the Solar System, with many more expected to be out there. ESA’s Planetary Defence Office, ESA’s Near-Earth Object Coordination Center, and astronomers around the globe are looking up to keep us safe, working together to ensure we know well in advance if an asteroid is discovered on a collision course.
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