this crab spider is not just cuddling around it is thinking about flying what’s on top of this artificial Dome raises a leg to sample the air flow once it satisfy it raises its abdomen turns on its spinnerets the silk making organs and shoots threads Skyward until it launches it’s called ballooning only from their own silk threads incredibly these spiders are known to ride the wind across oceans and can reach Heights of a mile or two and sometimes so many spiders launch together at the ground becomes blanketed with spider silk ballooning to seek food or danger find a mate but much is still unknown about the physics of spider flight and that’s what Drew moon-sun toe to study that he is in Berlin you can see the path of balloon spider takes after launching from his finger in nature but for detailed analysis to the lab or the tested them in a window and the silk they spin can measure up to 6 ft long amazingly but what you might think of is the stickiness of the air that holds them Aloft imagine it’s red suspended in a thick fluid it won’t sync and if the fluid is moving along the thread moves with it a strand of silk maybe more than a thousand times thinner than a human hair so for spider silk fluid swiftly alarm to take the spiders fire a few these spiders don’t need an actual balloon to fly just their own amazing silkSpider flight, known as ballooning, is a mysterious phenomenon not fully understood by science. How is it that spiders can use their own silk to ride the wind for miles at a time? A researcher in Berlin tested crab spiders in nature and a wind tunnel to find out more about how they fly.
Read the story here: https://www.nytimes.com/2018/06/26/science/spiders-ballooning-wind.html
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