Today's featured list: The moons of Saturn are numerous and diverse, ranging from tiny moonlets less than 1 kilometer (0.62 mi) across to the enormous Titan, which is larger than the planet Mercury. Saturn has sixty-two moons with confirmed orbits, fifty-three of which have names, and only thirteen of which have diameters larger than 50 kilometers (31 mi). Saturn has seven moons that are large enough to become spherical, and dense rings with complex orbital motions of their own.
The Gross Clinic is an 1875 oil-on-canvas painting by the American artist Thomas Eakins. It measures 8 ft by 6.5 ft (240 cm by 200 cm). The painting depicts Samuel D. Gross (July 8, 1805 – May 6, 1884), a seventy-year-old American medical professor, dressed in a black frock coat and lecturing a group of Jefferson Medical College students in Philadelphia, Pennsylvania. The painting is based on a surgery, witnessed by Eakins, in which Gross treated a young man for an infected femur. Gross is pictured here performing a conservative operation, as opposed to the amputation normally carried out at the time. Eakins included a self-portrait in the form of a student with a white cuffed sleeve sketching or writing, at the right-hand edge of the painting, next to the tunnel railing. The Gross Clinic has been restored three times, most recently in 2010, and is currently in the collection of the Philadelphia Museum of Art.
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