Margaret Harwood

Jascin N. Leonardo Finger • July 21, 2025

The MMA found its first astronomer in Margaret Harwood, a 1907 Radcliffe graduate who worked in the Harvard Observatory. Her fellowship began in 1912 and over the first year, she researched, continued to conduct public lectures and open nights, and worked with students of all ages – including those in the public schools. She returned to Cambridge for the winter months where she continued to work at the Observatory. In 1915, she took her leave as was authorized by the fellowship and acquired her master’s degree in astronomy at Berkeley. She returned to Nantucket in 1916, accepting the position of Director of the Observatory. This made Harwood the first woman to head a small private observatory in the United States.  Harwood continued her research, with a focus on variable asteroids, published results of her work in numerous publications, and continued to lecture and host open nights. She had assistance from others, including island carpenter and school teacher, Alvin E. Paddock. Harwood became a “first –class celestial photographer . . . accumulating a valuable set of Nantucket photographic plates of variable stars . . .” which are still part of the MMA collection and were the first in the world to be completely digitized. Over the course of her tenure, more than 3,600 plates of the night sky were taken – more than 2,100 by Harwood herself. In the 1950s, Harwood was the first woman to gain access to the Mount Wilson Observatory then the world’s leading observatory, where she was able to use the photographic instruments to further her research.


Harwood is seen in the photograph here as she looks for Venus during midday in the MMO using the Cooke-Clark telescope, guided by Maria Mitchell’s own Alvan Clark.


JNLF

Recent Posts

October 1, 2026
“If you don’t look, you don’t see. You have to go and look.” -Edith Andrews
By Jascin N. Leonardo Finger • October 1, 2026
10mo 1, 1847. {October 1, 1847} This evening at half past ten Maria discovered a telescopic comet five degrees above Polaris. Persuaded that no nebulae could occupy that position unnoticed it scarcely needed the evidence of motion to give it the character of a comet. From the journals of William Mitchell, father of Maria. One hundred and seventy-nine years later! JNLF
September 30, 2026
The Nantucket Maria Mitchell Association (MMA) announces that its annual Aquarium Release Day will take place on Saturday, October 10, 2026 from 10am - 12pm at the MMA Aquarium at 32 Washington Street. A sensory-friendly half hour will be offered from 9:30 – 10am. Join MMA staff to help the staff release this season’s Aquarium inhabitants back into the ocean. This community event is FREE to the public and a great opportunity to learn and celebrate the marine life that lives in the waters of Nantucket Island. The MMA Aquarium is dedicated to educating the public on the importance of biodiversity in our unique marine ecosystems found here on Nantucket. Each summer, the MMA Aquarium Manager, Chelsea Petrik, as well as her team of dedicated college interns and volunteers, explore the shores of Nantucket to find and document an assortment of over 7,500 individual marine animals, most of which are recorded and released. They snorkel, seine, and beachcomb to collect over 300 different marine animals. The animals are studied and cared for at the Aquarium so that the MMA can help people to learn more about these important marine organisms. Roughly seventy different species are featured at the Aquarium throughout the season. Local fishermen also provide the Aquarium with species they come across in their nets and at the end of their lines. Pre-registration is encouraged. Register at the link below: https://112458a.blackbaudhosting.com/112458a/2025-Aquarium-Release-Day-10Oct2026 The Maria Mitchell Association is a private non-profit organization. Founded in 1902, the MMA works to preserve the legacy of Nantucket native astronomer, naturalist, librarian, and educator, Maria Mitchell. The Maria Mitchell Association operates two observatories, a natural science museum, an aquarium, a research center, and preserves the historic birthplace of Maria Mitchell. A wide variety of science and history-related programming is offered throughout the year for people of all ages. ###
Show More