ESA’s Mars Express spacecraft found obvious traces of spider. They are scattered in the south pole region of Mars.
This image of an Inca city on Mars was taken on February 27, 2024 by the high-resolution stereo camera on board ESA’s Mars Express spacecraft. Image credit: ESA / DLR / FU Berlin.
“The Martian ‘spiders’ are not actual spiders, but form when spring sunlight falls on layers of carbon dioxide deposited during the dark winter,” said a member of the Mars Express team.
“Sunlight turns the carbon dioxide ice at the bottom of the layer into gas, which then accumulates and breaks through the ice sheet above.”
“During Mars’ spring, the gas explodes, dragging black material down to the surface as it progresses and shattering layers of ice up to a meter thick.”
“The resulting gas, laden with black dust, erupts through cracks in the ice in the form of tall fountains and geysers, before falling down and sinking to the surface.”
This creates a dark spot 45 m to 1 km (148 to 3,280 ft) in diameter.
This same process carves a distinctive “spider-shaped” pattern beneath the ice. Therefore, these black spots are evidence that a spider may be lurking underneath.
“Dark spots can be seen throughout the Mars Express image. But most of them can be seen as small specks in the dark region on the left, located just on the outskirts of a part of Mars called Inca City.” said the researchers.
“The reason for this name is no mystery: the network of linear, almost geometric ridges recalls Inca ruins.”
More formally known as Angustus Labyrinth. Inca City was discovered in 1972 by NASA’s Mariner 9 spacecraft.
“We still don’t know exactly how Inca cities formed. Sand dunes may have turned to stone over time,” the scientists said.
“Perhaps materials such as magma or sand are seeping through fractured sheets of Martian rock. Alternatively, the ridges could be ‘eskers,’ tortuous structures associated with glaciers.”
“The ‘walls’ of Inca cities appear to be part of a larger circle, 86 km (53.5 miles) in diameter.”
Scientists suspect that Inca City is located inside a large crater formed when rocks from space collided with the planet’s surface.
“This impact may have caused the fault to ripple in the surrounding plains, which was then filled with rising lava and then worn away over time,” the researchers said.
Source: www.sci.news
