Mystery over 'giant spiders on surface of Mars' finally explained after 20 years

dailystar.co.uk:

Mars' surface are.The strange alien patterns spotted on the Red Planet's south pole 20 years ago baffled scientists as they don't resemble anything on Earth.However, a new study describes how scientists successfully recreated a smaller version of the spiders in their lab.By using a slab of carbon dioxide ice - also known as dry ice - and a machine that simulates the atmosphere on Mars, they've found it to be gas.When the cold ice made contact with the warmer bed of Mars-like sediment, part of the ice transformed from a solid to a gas, referred to as sublimation, reports Space.com.The process formed spidery cracks where the escaping gas pushed through the ice, claims a report in the journal Scientific Reports. "This research presents the.