Astronomy lecture to explore Saturn's 'F Ring' and moons

A monthly astronomy lecture at Baltimore's Space Telescope Science Institute on Tuesday will delve into Saturn's active outermost ring, known as its F Ring.

The institute's Bonnie Meinke will deliver a lecture titled, "Saturn's Intricate F Ring and the Small Moons that Perturb It."

Data from NASA's Cassini mission, which has been exploring Saturn since 2004, has shown the ring to be constantly changing. Scientists believe that may be because of what are known as "shepherd" moons that orbit within or around rings like Saturn's.

The lecture will be held at 8 p.m. Tuesday in the institute's auditorium at 3700 San Martin Drive, on the Johns Hopkins University campus. The event is free and open to the public.

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