The Metro-Atlanta Scale Model Solar System (MASS) Project

The Metro-Atlanta Scale Model Solar System (MASS) project is an informal science education tool for the residents of Atlanta, focused on helping people understand the size and scale of our solar system and the planets within it.

The center of the model is located at Bradley Observatory, where the Sun is represented by an approximately 30 foot diameter plaza. At eight other locations throughout Metro-Atlanta (shown below), two large format panels have been installed. One panel shows the extent of the MASS and the location of each of the planets. A second panel shows a scaled image of the planet that would be found at that location in its orbit around the Sun.

mass

 

 

Interactive Map of the Bradley Observatory Plaza Design

 

Click the planets in the design for more information!

mercury

Distance from the Sun:
57,909,175 km

Equatorial Radius:
2,439.7 km

Mercury's page from NASA's Solar System Exploartion site

MASS Location: Alston Campus Center, Agnes Scott College

mercury

venus

Distance from the Sun:
108,208,930 km

Equatorial Radius:
6,051.8 km

Venus's page from NASA's Solar System Exploration site

MASS Location: Decatur High School

venus

earth

Distance from the Sun:
149,597,890 km

Equatorial Radius:
6,378.14 km

Earth's page from NASA's Solar System Exploration page

MASS Location: DeKalb County Public Library, Decatur Branch

earth

mars

Distance from the Sun:
227,936,640 km

Equatorial Radius:
3,397 km

Mars's page from NASA's Solar System Exploration site

MASS Location: Columbia Theological Seminary

mars

jupiter

Distance from the Sun:
778,412,020 km

Equatorial Radius:
71,492 km

Jupiter's page from NASA's Solar System Exploration site

MASS Location:  Emory University, Physics Building

jupiter

saturn

Distance from the Sun:
1,426,725,400 km

Equatorial Radius:
60,268 km

Saturn's page from NASA's Solar System Exploration site

MASS Location: Georgia Tech, Physics Building

saturn

uranus

Distance from the Sun:
2,870,972,200 km

Equatorial Radius:
25,559 km

Uranus's page from NASA's Solar System Exploration site

MASS Location: Atlanta Hartsfield-Jackson International Airport

uranus

neptune

Distance from the Sun:
4,498,252,900 km

Equatorial Radius:
24,764 km

Neptune's page from NASA's Solar System Exploration site

MASS Location: Sweetwater Creek State Park

neptune

sun

Distance from Earth:
149,597,900 km

Equatorial Radius:
695,500 km

The sun's page from NASA's Solar System Exploration site

MASS Location: Bradley Observatory, Agnes Scott College

sun