Nantucket Maria Mitchell Association Welcomes Gail Walker, Geoff Clayton, and John Barentine as Featured Guests for the January Science Speaker Series, “How Dark is Nantucket’s Night Sky?”

January 13, 2025

NANTUCKET, MA—The Nantucket Maria Mitchell Association (MMA) announces that it will host Gail Walker, Geoff Clayton, and John Barentine, with moderator, Joanna Roche, as featured presenters for its January Science Speaker Series. Their presentation will take place on Wednesday, January 22 at 7pm via Zoom. This event is free to all.

 

“How Dark is Nantucket’s Night Sky?”

Join Gail Walker, founder of Nantucket Lights, Dr. Geoff Clayton, Interim Director of Astronomy at the MMA, and Dr. John Barentine, founder of Dark Sky Consulting, in a panel discussion moderated by the MMA’s Executive Director, Joanna Roche. Learn about the Nantucket Sky Quality Monitoring Project, a joint initiative of Nantucket Lights and the MMA launched in 2022 to collect ground-based measurements to determine how dark Nantucket's night sky is. The data collected to date establishes a baseline for assessing the effectiveness of efforts to mitigate light pollution going forward — and helps us understand how close we are to losing the ability to see the Milky Way with the naked eye. 

 

Nantucket Lights and the MMA will be explaining how this project works and plans going forward. John Barentine, retained to independently analyze the data collected so far, will discuss his findings and recommendations. 

 

Gail Walker is the founder and president of Nantucket Lights (https://nantucketlights.org), an all-volunteer, citizen advocacy group exclusively dedicated to preserving and protecting Nantucket’s nighttime environment and heritage of dark skies. A long-time summer resident of ‘Sconset, she began working on light pollution as a board member of the 'Sconset Civic Association following her retirement from the U.S. Department of Justice where she was a trial attorney for almost twenty years. In addition to leading Nantucket Lights, Walker serves on the Executive Committee of the Nantucket Civic League. 

 

Geoffrey Clayton received his Ph.D. in Astronomy and Astrophysics from the University of Toronto. He has worked for the Universities of Wisconsin and Colorado, as well as for NASA. He spent twenty-seven years as a professor at Louisiana State University. His association with the MMA goes back almost sixty years. He attended lectures and attended Open Nights at the MMA when he was a child visiting Nantucket. He still appreciates the dark skies of Nantucket now that he lives on the island full time. 

 

John Barentine is the Principal Consultant and Executive Officer at Dark Sky Consulting, LLC. He earned a Ph.D. in astronomy from the University of Texas at Austin and previously held staff positions at the National Solar Observatory, Apache Point Observatory, the Sloan Digital Sky Survey, and the International Dark-Sky Association. He is a member of the American Astronomical Society (AAS), the International Astronomical Union (IAU), and the Illuminating Engineering Society (IES), and is a Fellow of the Royal Astronomical Society (RAS). He serves on light pollution committees of the AAS, IES and IAU, and co-leads the Community Engagement section of the IAU Centre for the Protection of the Dark and Quiet Sky from Satellite Constellation Interference.

 

Pre-registration is required to attend Zoom. To register for Zoom, use the registration link below:

https://us06web.zoom.us/webinar/register/WN_--Lju9KeTGGrxRJ4Dzihzw



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


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For Immediate Release

January 13, 2025

Contact: Joanna Roche

jroche@mariamitchell.org

Recent Posts

Raise The Roof!

By Jascin N. Leonardo Finger • April 6, 2026
Well, actually replace the roof! With funding from the Community Preservation Act and the work of Lydon and Sons, Inc. the Mitchell House is getting a new roof. The current one had come to the end of its useful life. A cedar roof can last a long time – longer than asphalt – and is more historically accurate. The roof we are removing was installed in about 1992 – replacing a roof from the 1930s that was not cedar but a combination of materials that actually yes, did last sixty years. The unfortunate issue has arisen that the roofwalk (walk) has to be replaced. This is NOT the original walk – nor that old of a walk. It’s likely from the 1970s or so and has been cobbled at over time. It’s not a functioning walk – no one is allowed on it – but the Mitchell House needs it none the less. Maria Mitchell and her father, William, likely used the walk for astronomical observations – in addition to the yard – but the walk is also protected as part of the preservation easement on the House. Walks – NOT and NEVER called widow’s walks – were used for preventing and putting out chimney fire and roof fires. In a place where wood was expensive and had to be brought from “the main” these were purely utilitarian. What good Quaker (or non-Quaker) would build a platform for his wife to stare out to the harbor to see if her husband was on his way home? The other issue is that the walk was completely resting on the ridge board – and actually was notched to accept the pitch and tip of the ridge board so they couldn’t work around it. I suspect this may have been the ways walks were once built – and also a crafty and smart thinking carpenter who came up with the idea. It makes the walk lower. But between that issue and the age of the walk and then the blizzard of February 2026 that packed gusts over 83 MPH (that’s Category 1 hurricane winds) the walk gave in. Balusters had been knocked out and the railings were loose and pulling away from the posts. So, we will also be working with Barber and Sons to create a new roofwalk – and they agreed to do this for us quickly which is also no small feat given how busy everyone is these days. So from the bottom of the Mitchell House’s heart (and mine) a big thank you to Chris Lydon and Lydon and Sons and crew, Barber and Sons / Beau and Nate Barber, the Community Preservation Committee, and Nantucket Preservation Trust (our easement holder)! JNLF

Keep Calm and Bird On: April 2026

April 1, 2026
“If you don’t look, you don’t see. You have to go and look.” -Edith Andrews

Nantucket Maria Mitchell Association Welcomes Dr. Joshua Reding for “Dark and Quiet: Astronomy in the Age of Satellite Constellations” For April Science Speaker Series

April 1, 2026
NANTUCKET, MA—The Maria Mitchell Association (MMA) invites the community to “Dark and Quiet: Astronomy in the Age of Satellite Constellation” presented by Dr. Joshua Reding for its April Science Speaker Series. This free presentation will take place Wednesday, April 15 from 7 – 8pm on Zoom. In the past decade, the number of active satellites in Earth’s orbit has grown by a factor of 10. This breakneck growth in the commercial space industry has turned entrepreneur, investor, and policymaker eyes to the skies, but in the process has boxed out the historic stewards of the space domain: scientists. Explorers and pioneers across human history learned that uncharted territory hides unprecedented challenges, but the consequences of decisions made towards occupying the “final frontier” do not abide by international borders. Space operators therefore ignore the warnings and concerns of scientists not only at their own risk, but at the risk of everyone living under increasingly crowded skies. In this conversation, Dr. Josh Reding will explain how astronomers are trying to inform and guide policymaking for the rapidly changing space environment, both informally through volunteer action and advocacy and formally in domestic and international policy forums. Dr. Reding is an optical astronomer by training and now a radio spectrum manager by profession. He completed his B.A. with a double major in Astronomy-Physics and Philosophy at Colgate University, and his M.S. and Ph.D. in Physics from the University of North Carolina at Chapel Hill. His research investigated unusual white dwarf stars that likely formed in stellar mergers as “failed” supernovae and he has also designed astronomical instrument components and installed them at world-class observatories. Concurrent with the completion of his Ph.D., Reding began his professional science policy career as a North Carolina STEM Policy Fellow in the NC Department of Commerce’s Office of Science, Technology & Innovation. He was then selected for the American Association for the Advancement of Science Science & Technology Policy Fellowship, which places scientists in federal offices as expert contributors to ongoing agency missions. 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_5MoAybp5QHCasQ0QE5xmgQ#/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. ###
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