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A white knitting needle appears in the middle of the image.  Swirling white lines surround the knitting needle, showing the paths of water drops as the move around the needle.  The image is a composite of video frames that have been stacked to show the paths of water drops in a single image.

Science of Opportunity_Stacked Water Drops

(February 19, 2025) -- NASA astronaut Don Pettit demonstrates electrostatic forces using charged water droplets and a knitting needle made of Teflon. This series of overlapping frames displays the unique attraction-repulsion properties of Teflon and charged droplets, similar to how charged particles from the Sun behave when they come in contact with Earth’s magnetic field. Highly energetic particles from space that collide with atoms and molecules in the atmosphere create the aurora borealis. 

Image Credit: Don Pettit
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