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The first and third loops are run clockwise, while the second and fourth loops are run anticlockwise.

By ingeniously designing two chiral turbines, researchers now have the capability to dictate the direction of rotation, clockwise or anticlockwise.

They can cause low pressure systems, where air rises and blows anticlockwise, forming clouds and precipitation.

“If the worm rapidly switches between winding clockwise and anticlockwise, you get untangling behavior.”

Then trace around the shape in an anticlockwise direction from Capella to Castor and Pollux to Procyon to Sirius, until you reach Rigel again.