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Scott Kelly's new mission is on Earth

The astronaut talks about his life and work in science.
Astronaut Scott Kelly says he's proof that someone who is “far from a genius” can become a scientist.
Bill Ingalls/NASA via Getty Images

The Cassini mission has ended, but its legacy remains

Sep 15, 2017
After 20 years, the Cassini spacecraft has met its end — and NASA is already looking at the next horizon.
A computer-animated still showing the Cassini spacecraft in its final orbit. After 13 years, the spacecraft ended its mission and began a final descent into Saturn's atmosphere, where it burned up.  
Courtesy of NASA/Jet Propulsion Lab