Nantucket Maria Mitchell Association Announces Harbor Acidification Monitoring Project Launch Event

August 8, 2024

NANTUCKET, MA—The Nantucket Maria Mitchell Association (MMA) announces the launch of its Harbor Acidification Monitoring Project made possible by funding from ReMain Nantucket, Great Harbor Yacht Club Foundation, Osceola Foundation, Sociable Weaver Foundation, and in collaboration with the Town of Nantucket’s Harbormaster. The MMA will deploy an oceanographic buoy in the Nantucket Harbor to begin a continuous data collection and publication monitoring project, the first of its kind on Nantucket. This project will collect and publish continuous data on seawater acidity (pH), dissolved oxygen, temperature, total algae, dissolved nitrates, and salinity (conductivity). This data will create the "Mitchell Curve," a long-term, permanent record of ocean acidification in Nantucket Harbor.


Due to its unique geographic, hydrographic, ecologic, and cultural setting, Nantucket Harbor has one of the last remaining healthy eelgrass (Z. marina) beds in New England. The shape of Nantucket Harbor forces incoming sea water to pass over eelgrass beds, which sequester the water’s carbon dioxide. Seagrasses can consume more carbon dioxide per acre than rainforests, and noticeably lower the acidity of the water around them. The MMA believes the confluence of these factors also make it one of the best locations to investigate the impacts of healthy eelgrass on the commercially valuable Nantucket bay scallop (A. irradians). These parameters will provide the public and cross-agency decisionmakers with essential, real-time information for more effective conservation, restoration, and management of critical habitats and the valuable commercial and recreational fisheries that depend on them.


Nantucket may become a sanctuary with healthy water quality in the future, benefiting a wide range of ocean life. It is important to understand how our harbor’s chemistry is changing during both short- and long-term tidal intervals, so that we can better comprehend the anthropogenic effects on the harbor. Young shellfish shells can dissolve in acidic water, and large fish may become stressed and unhealthy. Even naturally decomposing shells are beneficial to water quality, releasing basic calcium carbonate that lowers the acidity of the ocean. Beyond pH changes, understanding the impact of nutrient loading is crucial to understanding the health of the harbor and mitigating perilous effects on the eelgrass and bay scallop. By receiving constant real-time data, we can observe how the water chemistry fluctuates related to shortterm occurrences, such as runoff events, and long-term occurrences, such as weather trends, and analyze the effects those fluctuations may have on Nantucket’s sea life.


The MMA is thrilled to make the data collected through the “Mitchell Curve” available to all. This open-source data format will not only ensure transparency in scientific communication but also will create opportunities for students locally and afar to monitor the harbor in real time, explore opportunities to mitigate the effects of warming oceans, and potentially give rise to informing data driven decisions that support a healthy Nantucket Harbor. Additionally, the buoy and its data stream will provide the Maria Mitchell Association interns with incredible opportunities to handle and maintain advanced water quality equipment, process real-time data, and effectively communicate that data with community collaborators and to the public at large.


The Maria Mitchell Association was founded in 1902 to preserve the legacy of Nantucket native astronomer, naturalist, librarian, and educator, Maria Mitchell. After she discovered a comet in 1847, Mitchell’s international fame led to many achievements and awards, including an appointment as the first female professor of astronomy at Vassar College. Maria Mitchell believed in “learning by doing” and today that philosophy is reflected in the MMA’s mission statement, programs, research projects, and other activities. 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.


###

For Immediate Release

August 8, 2024

Contact: Jónelle Gurley

programs@mariamitchell.org

Recent Posts

Nantucket Maria Mitchell Association NSF-REU Interns Attend 247th American Astronomical Society Meeting

February 5, 2026
NANTUCKET, MA—On the occasion of the 247th American Astronomical Society (AAS) Meeting, and the 179th anniversary year of the discovery of Maria Mitchell’s Comet, the 2025 astronomy interns from the Nantucket Maria Mitchell Association (MMA), journeyed to Phoenix, AZ, to represent the MMA and present their research. Building on the legacy of Maria Mitchell, the first female American astronomer, the MMA offers STEM research and education opportunities to interns from across the country via their paid internship programs. The MMA’s Maria Mitchell Observatory has operated a National Science Foundation funded Research Experiences for Undergraduates (REU) program for decades. The REU is funded by a generous grant from the U.S. National Science Foundation (NSF) which allows the MMA to bring six undergraduate students to Nantucket each summer. These talented and promising students are selected out of a pool of hundreds of applicants from across the United States. From January 4 – 8, 2026, the MMA’s most recent NSF-REU students presented their work at the winter AAS meeting on subjects ranging from the characteristics of dust around and between stars, to various aspects of supernova explosions. MMA Director of Astronomy, Dr. Jackie Milingo, attended the conference and presented each student with a bound volume of their collected research papers. “The MMA’s long-standing REU program has nurtured hundreds of budding scientists over many decades. It’s always inspiring to see these students shine and make the most of this extraordinary opportunity. We’re a small program with an outsized effect on not only these students, but the future of the scientific community.” The 2025 REU students and their respective presentations are listed below. The common theme of their research was dust. This dust is made of familiar elements like carbon, oxygen, silicon and iron is similar to grains of sand or ash. Even though these dust grains are a small part of our Galaxy, they are very important because they can block the light coming from everything astronomers study. Understanding this dust helps us to understand how it is formed and how it affects the light that must travel vast distances across our Milky Way to get to our telescopes. This past summer’s NSF-REU interns and their research presentations which they presented at the AAS are: Madison Gerard (University of Texas at Austin) : SN 2024abfl: An Absolutely Flat and Low-Luminosity Interacting Type II Supernova Kaylee Perez (Texas State University) : Exploring the Link Between Dust Extinction and Attenuation with Simulated Data LaurenBarkey (CaliforniaPoly Pomona) : Peek-a-Boo: Exploring the NEOWISE Lightcurves of RCoronae Borealis Stars Aiden Agostinelli (University of Montana) and Ben Radmore (University of Michigan) : When the Dust Settles: Late-Time MIRI Imaging of SN 2011ja Image: 2025 NSF-REU Interns, Madison Gerard, Lauren Barkey, Benjamin Radmore, Aidan Agostinelli, and Kaylee Perez with MMA Director of Astronomy, Dr. Jackie Milingo.  The Maria Mitchell Association was founded in 1902 to preserve the legacy of Nantucket native astronomer, naturalist, librarian, and educator, Maria Mitchell. After she discovered a comet in 1847, Mitchell’s international fame led to many achievements and awards, including an appointment as the first professor of astronomy at Vassar College. Maria Mitchell believed in “learning by doing” and today that philosophy is reflected in the MMA’s mission statement, programs, research projects, and other activities. 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. ###

Nantucket Maria Mitchell Association Welcomes Susan Vizurraga for February Science Speaker Series

February 4, 2026
NANTUCKET, MA— The Nantucket Maria Mitchell Association (MMA) welcomes Susan Vizurraga for a discussion of her book Williamina Fleming, Astronomer, an imagined memoir. As one of the Harvard College Observatory’s (HCO) women computers Williamina Fleming led a fascinating life. She was, an immigrant, a working mother, and an astronomer and her story will be brought to light in this engaging presentation on the remarkable legacy of a woman who helped transform modern astronomy from behind the scenes. Through Fleming’s own imagined voice, Vizurraga explores Williamina’s journey from domestic servant to internationally respected scientist, her pivotal role in classifying stellar spectra, and her quiet perseverance in a male-dominated field. This talk celebrates Williamina Fleming not only for her scientific achievements, but also for her resilience, curiosity, and lasting impact on how we understand the stars. This free event will be held via Zoom on Wednesday, February 18, from 7–8 pm. Susan Vizurraga is the author of the historical fiction novel-in-verse Williamina Fleming, Astronomer, an imagined memoir based on the life of the real-life Scottish immigrant who began work as a maid, joined the HCO as one of many women computers, and became the discoverer and curator of stars. A former middle school teacher and university instructor, Vizurraga is the author of the picture books Our Old House (a Junior Library Guild Selection) and Miss Opal’s Auction (a multi-generational selection of the National Council for the Social Studies). She is a volunteer docent at the Georgia Museum of Art and a poll worker with her local elections board. She lives in rural southern Oconee County, Georgia. This event will be held via Zoom. Pre-registration is required. To register for the free, virtual event, use the registration link: https://us06web.zoom.us/webinar/register/WN_SVlPAu9ITmmQll_E9aU3aw#/registration The Science Speaker Series is generously sponsored by the Maria Mitchell Association’s lead sponsor, Bank of America. The Maria Mitchell Association was founded in 1902 to preserve the legacy of Nantucket native astronomer, naturalist, librarian, and educator, Maria Mitchell. After she discovered a comet in 1847, Mitchell’s international fame led to many achievements and awards, including an appointment as the first professor of astronomy at Vassar College. Maria Mitchell believed in “learning by doing” and today that philosophy is reflected in the MMA’s mission statement, programs, research projects, and other activities. 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. ###

Stitch, Stitch, Stitch: Nantucket Sewing Circles of the Nineteenth Century And Their Support for Those In Need

By Jascin N. Leonardo Finger • February 2, 2026
Maria Mitchell once said, “When I see a woman sew, I think, what a capacity she has for using a micrometer!” So, maybe what I am about to write would be a bit disappointing to her. However, I believe she was likely pleased by what sewing circles on Nantucket could accomplish for her fellow Nantucketers. As, the great-granddaughter of a milliner and extremely talented seamstress (she hand-smocked about twenty dresses for me when I was an infant and did all of that with rheumatoid arthritis!) and the granddaughter of two talented women of sewing and needlework, my apologies to Maria . . . . The sewing circles that arose on Nantucket in the nineteenth century were formed in part because of the Great Fire of 1846, which, along with the demise of whaling and the lure of the Gold Rush, helped to bring about an economic depression that would last decades and cause Nantucket’s population to decrease from its height of around 10,000 in the 1830s to fewer than 2,000 people by the late nineteenth century. The sewing circles helped struggling families by providing them with clothes, food, and even paying their rent. Many of the organizations rose from within the churches of the island and all were founded, managed, and run by women. The Ladies Union Circle of the First Congregational Church, established in 1846, was followed by similar groups, such as the Unitarian Sewing Society and the Ladies Wesleyan Society of the Methodist Episcopal Church, both established in 1850. The women gathered together to create, sew, and sell their creations to raise money for those in need and for their own churches. The groups not only generated the money to help others; they also provided a social venue for those who remained on Nantucket and witnessed the quickly deteriorating social fabric of their island home. The societies served as a positive network and support group for their members. The women’s activities, accomplished many good deeds, and one group, the Unitarians, was even able to purchase a parish house for the church with funds they raised – no small task. Additionally, the sewing circles gave rise to other groups that many islanders heavily relied upon in the nineteenth century: the Relief Association, the Children’s Aid Society, and the Ladies Howard Society, which could date its beginnings to the era of the American Revolution. The Relief Association is still in existence today; assisting island families in need. The act of helping your fellow islander is something that has been a constant on Nantucket, back to when the first English came to the island to settle in 1659. Some of it is born of the isolation of the island, but it is largely that the island is akin to one big family and that is what you do, you take care of your family. JNLF
Show More