New images of Mars explore the depths of the Red Planet’s Valles Marineris canyon, the largest canyon system in the solar system.
The European Space Agency (ESA) images, which were taken with the spacecraft’s High Resolution Stereo Camera (HRSC), also capture incredible detail on the canyon floor. Unlike the Grand Canyon, which was carved by the Colorado River, Valles Marineris is believed to have formed from separate tectonic plates. This violent movement on the Martian surface created a jagged canyon floor, as seen in the new images.
“The twisted floor of Ius Chasma is equally fascinating,” ESA officials wrote in the statement (opens in a new tab) accompanying the new images. “As the tectonic plates moved apart, they appear to have caused the formation of irregular triangles of rock that look like a row of shark’s teeth. Over time, these rock formations have collapsed and eroded.”
Related: The largest canyon in the solar system is revealed in new images
ESA’s Mars Express spacecraft, which has been orbiting the red planet since 2003, zoomed into two trenches that are part of the western Valles Marineris: Ius Chasma and Tithonium Chasma. The images not only capture incredible surface detail, but also highlight the impressive size of the trenches.
Valles Marineris stretches 2,500 miles (4,000 kilometers) long, 124 miles (200 km) wide, and 4.3 miles (7 km) deep, nearly ten times longer, 20 times wider, and five times deeper than the Grand Canyon, according to the ESA press release.
This color-coded topographic image shows Ius and Tithonium Chasmata, which are part of the Valles Marineris canyon structure on Mars. (Image credit: ESA/DLR/FU Berlin)
Lus Chasma on the south side of the canyon is 522 miles (840 kilometers) long, while Tithonium Chasma on the north side is 500 miles (805 km) long. By comparison, the Grand Canyon is 446 km long and just over a mile at its deepest point. On Earth, Valles Marineris would span the distance from the northern tip of Norway to the southern tip of Sicily, according to the statement.
ESA’s view of the two craters captures the diverse features of Mars’ surface, ranging from dark sand dunes created by nearby volcanic activity, mountain-sized mounds that have been eroded by wind, smaller bumps that may have formed from the evaporation of water that once filled the chasma, and evidence of a recent landslide caused by the collapse of the canyon wall.
Several spacecraft studying Valles Marineris have found evidence that suggests liquid water may have once filled the canyon. The Mars Express mission detected signs of water-bearing sulfate minerals in the area of Ius Chasma and Tithonium Chasma, while ESA’s Trace Gas Orbiter (TGO), part of the ExoMars missiondetected water ice beneath the surface of Candor Chaos, located near the center of the massive canyon system.
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