Treworgy Planetarium

Planetarium Show fees:

Visitor: $8 (Ages 5 and under: Free) 

Member: $5

Current Planetarium Shows


1:00 PM – “Harvest Lights”
3:00 PM – “Harvest Lights”


12:00 PM – Fulldome Movie
1:00 PM – “Harvest Lights”
3:00 PM – Harvest Lights

All programs are about 30 minutes long

Full-dome Movies

Join us at noon on weekends for an immersive experience using the planetarium’s new full-dome projector! We will
rotate through a series of movies, showing one movie per weekend day, about a special topic in Astronomy.

All full dome programs are 25-30 minutes long, and here are just some of our titles:
– “Two Small Pieces of Glass: The Amazing Telescope
– “Big Astronomy: Peoples, Places, Discoveries
– “Forward to the Moon
To find out which full-dome movie is playing on the day of your visit, please stop by the Planetarium, or check with
the information desk at the Mystic Seaport Museum entrance.

Harvest Lights
Discover the natural beauty of the night sky as seen from Mystic, CT. Prepare yourself for some stargazing in your
own backyard by learning to use the Big Dipper to find Polaris, the North Star. Once you’ve got your bearings, we
can locate some of the major constellations and shapes in the autumn night sky, like Cygnus the Swan, Cassiopeia
the Queen, and the Great Square of Pegasus. We’ll also explore any visible planets that might be seen on a
particular night (Saturn and Jupiter will feature prominently this time of year), and examine the Moon, our closest
neighbor in space. Finally, we’ll talk a little about how sailors would navigate the seas guided by the stars.


Call 860.572.0711 x5151 or email planetarium@mysticseaport.org

Stars to Guide the Way

Since 1960, the Treworgy Planetarium at Mystic Seaport Museum has been a center for science education, inspiring visitors to draw connections between our maritime history and the world and skies around us. When we look up at the sky, we see the very same stars that guided sailors long ago, as they developed their navigational tools and instruments. Over time, we have come a long way, from the compass and sextant to the GPS units that many of our smartphones have. In order to truly appreciate the technological luxuries we enjoy today, it is important now more than ever to preserve the traditions of the past.

Inside the Planetarium

Your family can participate in all of our shows at the Treworgy Planetarium, each one a live program delivered by a dynamic member of the Planetarium staff. Come see the sun, moon, planets, and stars like you’ve never seen them before! You will be immersed in a sea of stars, and the constellations will guide us on an unforgettable journey through the galaxy.

What’s in a Name?

If you’re wondering how our name is pronounced, think “TRUE-urr-gee.” Originally named the “Seaport Planetarium,” the Planetarium was re-named in 2009 in memory of Don Treworgy. Don worked at the Planetarium for 48 years, including 44 years as its Director, and was beloved by the Museum’s staff, volunteers, and visitors. The current staff is honored to work at a Planetarium that bears Don’s name, and his memory inspires us to continue the mission of education in the fields of Astronomy, Navigation, and Maritime History.


19th-Century Navigation

Planetarium K–12 Programs

In-school Programs

Programs for Scouts