Maine Solar System Model
US Route 1
Presque Isle to Houlton, ME
Drive the solar system to scale, forty miles of highway where the Sun stands in Presque Isle and tiny Pluto waits down in Houlton, a road trip through space itself.
The Maine Solar System Model is one of the largest scale models of the solar system in the world, stretching roughly forty miles along US Route 1 through Aroostook County. The Sun is represented by a large disk at the University of Maine at Presque Isle, and the planets follow at true scale distances down the highway, shrinking to small markers as you drive south.
The genius of the model is what it makes you feel. The inner planets come quickly, one after another, but then the road runs on for miles between the outer worlds, until distant Pluto sits far away in Houlton near the Canadian border. Driving it is a lesson in the sheer emptiness of space that no textbook can match.
What Travelers Love
- Driving from planet to planet and feeling the true, staggering scale of space
- Spotting the roadside planet markers as a scavenger hunt across Aroostook County
- A free, self-guided attraction that turns a long rural drive into an adventure
- The realization of just how far apart, and how small, the outer planets really are
Worth Knowing
- The planets are spread over roughly 40 miles of Route 1, so it is a driving tour, not a walk
- Markers can be easy to miss; a model map or list of locations helps you find each one
- The Sun and inner planets cluster near Presque Isle, while the outer planets stretch far south
- Aroostook County is remote and services are spread out, so fuel up and plan the drive
Learn about Maine Solar System Model
How the model was built
The model was created in the early 2000s by the University of Maine at Presque Isle, with faculty, students, and community volunteers building and placing the planet markers along Route 1 at carefully calculated scale distances.
Everything is scaled by the same ratio, both the sizes of the planets and the distances between them, so the model holds together as a true miniature of the real solar system rather than a set of unrelated roadside signs.
It was conceived as an educational tool and a point of local pride, giving Aroostook County a genuinely world-class attraction spread across its highways and turning a routine drive into a hands-on astronomy lesson.
Driving the planets
The tour begins at the Sun on the Presque Isle campus and heads south. Mercury, Venus, Earth, and Mars arrive in quick succession, close enough together that the inner solar system feels almost crowded.
Then comes the great gap. After Mars, the road stretches on for miles before reaching Jupiter and Saturn, and the outer planets are separated by such distances that the drive drives home how thinly matter is spread across the real solar system.
Far to the south, near Houlton, sits Pluto, a tiny marker at the end of the model that rewards travelers who follow the whole thing through. Because some markers are small and set beside a busy highway, a map of their locations makes the hunt easier.
The County around it
Aroostook County, known simply as The County, is Maine's largest and northernmost county, a vast landscape of potato farms, forest, and small towns that feels a world apart from the tourist coast.
This is the homeland of the Wabanaki peoples, and the Mi'kmaq and Maliseet nations maintain communities in the region today, present and enduring in the far north.
The wide-open, sparsely settled country is part of what makes the solar system model work so well. There is room here for a forty-mile model of space, and the long quiet drives between planets suit the emptiness the model is trying to convey.
A model among the largest
Scale models of the solar system exist in many places, but few approach this one in size. By stretching across roughly forty miles of highway, the Maine model ranks among the largest true-scale solar system models anywhere, a distinction Aroostook County wears with quiet pride.
That scale is the whole point. Smaller models fit in a park or a hallway, but they cannot convey the real distances. Here, only a drive long enough to eat up an afternoon can show you how vast and empty the solar system truly is, which is why the model works best when you follow it all the way to Pluto.
Closest Boutels
The closest Boutel™ stays, so you can turn this stop into an overnight. Each is a place we chose through independent editorial review, never a paid placement.
Details
Presque Isle to Houlton, ME
Frequently asked questions
What is the Maine Solar System Model?
The Maine Solar System Model, in far northern Maine's Aroostook County, is one of the largest scale models of the solar system in the world, a remarkable installation stretching for many miles along U.S. Route 1 between Presque Isle and Houlton. Built to an accurate scale, the model places a large sun at one end, with the planets represented by scaled sculptures positioned at scaled distances along the highway, so driving the route lets you experience the vast, true proportions of the solar system. A fun and educational marvel, it turns a drive into a journey through space. With its enormous scale model, the Maine Solar System Model offers a fascinating destination in Maine.
How does the Maine Solar System Model work?
The Maine Solar System Model works by placing scaled representations of the sun and planets at accurately scaled distances along U.S. Route 1 over many miles, so that as you drive the highway, you pass each planet in turn at its proportional distance, giving a real sense of the enormous scale of the solar system. The sun is a large model at one end, with the inner planets close together and the outer planets spread far apart, just as in space. Driving the route from planet to planet is the experience. This clever, true-to-scale journey makes the Maine Solar System Model a unique attraction in northern Maine.
What can you do at the Maine Solar System Model?
You can drive the route along U.S. Route 1 to see each of the scaled planet models in turn at their proportional distances from the sun, experiencing the true vastness of the solar system, stop to view and photograph the planet sculptures, and enjoy a fun, educational journey through space that is especially engaging for families and science lovers. Following the model from the sun outward is the whole experience. It turns a highway drive into a cosmic adventure. With its scaled planets along the highway, the Maine Solar System Model offers an educational and fun experience in far northern Maine.
When is the best time to visit the Maine Solar System Model?
As an outdoor model along the highway, the Maine Solar System Model can be experienced year-round by driving the route, though the warmer months from late spring through fall offer the most comfortable weather for stopping to view and photograph the planet models, and clearer roads than snowy winter. Fall adds beautiful foliage to the drive. Allowing time to drive the full route from the sun outward enhances the experience. For the most pleasant conditions, aim for the warmer months to explore the Maine Solar System Model in far northern Maine.
What is near the Maine Solar System Model?
The Maine Solar System Model stretches along U.S. Route 1 in far northern Maine's Aroostook County between Presque Isle and Houlton, near Aroostook State Park, the Northern Maine Museum of Science and Nylander Museum, and Mars Hill and Big Rock Mountain. That makes the Maine Solar System Model a fascinating stop to combine with Aroostook State Park and the other attractions of far northern Maine on a visit to the state.
Nearby
Northern Maine Museum of Science
0.1 miles away
This free campus museum in Presque Isle is a low-key winner for curious kids.
Aroostook State Park
5.7 miles away
Aroostook State Park was Maine's very first, protected in 1938, and it wraps the base of Quaggy Jo Mountain, whose name is a shortened form of a Native American word for twin-peaked.
Nylander Museum
12 miles away
Tucked into Caribou is a little museum that exists because one immigrant could not stop collecting.
Mars Hill and Big Rock Mountain
14 miles away
For much of the year, the very first place in the lower 48 states to see the sunrise is not on the coast at all, but here on Mars Hill Mountain in far eastern Aroostook County.