Mitchell is featured perched on a roof at night, peering through a telescope at passing comets and stars. It's fitting since Mitchell is known for discovering a comet in 1847 at age 29.

As the National Women's History Museum (NWHM) noted, the discovery is noteworthy because Mitchell "used a mere two-inch telescope, which illustrates her true skill as an astronomer."

At the time, Mitchell was "sweeping the sky from the roof of the Pacific National Bank on Main Street, where her father was a cashier, [and] spotted a small blurry object that did not appear on her charts," according to the Maria Mitchell Association.