The Mars Reconnaissance Orbiter captured a curious image of the South Pole of the "red planet", whose surface seems to be full of "spiders" – Photo: Twitter @NASA
The Mars Reconnaissance Orbiter (MRO) captured a curious image of the South Pole from the "red planet", whose surface appears to be full of "spiders".
The photograph taken on May 13, 2018, during the winter in the southern region of Mars, shows a Glacial carbon dioxide cap that covers the southern part of the planet.
The National Administration of Aeronautics and Space (NASA, for its acronym in English), explains that the phenomenon "araneiform terrain" occurs when the spider-shaped mounds are formed at the moment the carbon dioxide ice below the surface it is heated and released.
NASA discloses convincing evidence that there could be life on Mars
The above generates the effect as if the arachnids they were on Martian soil. This active seasonal process can not be seen on Earth.
Like the dry ice on planet Earth, the ice of carbon dioxide on Mars it sublimes as it heats up, that is, it goes from solid to gas, and the latter is trapped below the surface.
The US space agency details that over time the carbon dioxide gas trapped accumulates under pressure, then break the ice like a jet which erupts dust.
In this way, the gas is released into the atmosphere and the darker powder It can be deposited around the ventilation or be transported by the wind to produce streaks.
The loss of carbon dioxide sublimated leaves behind these similar characteristics to recorded spiders on the surface of the "red planet".
So where are the spiders? On Mars! Our Mars orbiter took this image of "araneiform terrain," spider-like radiating mounds that form when Martian carbon dioxide ice below the surface heats up and releases each spring in a process not seen on Earth: https://t.co/gjuFKE2Uei pic.twitter.com/EQSEewEUP8
– NASA (@NASA) July 15, 2018