Mercury Transit Observed at Cerro Tololo Inter-American Observatory

About 13 times per century, fleeting Mercury can be seen passing directly in front of the Sun in what is called a transit. The most recent Mercury transit occurred on 11 November 11, 2019. While the path of Mercury across the Sun in fact traced a straight line, in this image the path appears to loop backwards due to an effect called field rotation as the telescope and camera track across the sky.

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Beware of Swimming if You Use Deep Brain Stimulation for Parkinson’s

Researchers have identified nine cases of people who lost their ability to swim after having a deep brain stimulation device implanted to control symptoms of Parkinson’s disease. The new research is published in the November 27, 2019, online issue of Neurology®, the medical journal of the American Academy of Neurology. All nine people had been good swimmers even after their Parkinson’s disease diagnosis. But once they had deep brain stimulation surgery, researchers found while other movement symptoms improved, their swimming skills deteriorated.

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