(Translated by https://www.hiragana.jp/)
Sciencenter, Ithaca NY
The Wayback Machine - https://web.archive.org/web/20130205135839/http://www.sciencenter.org/saganpw/
Sciencenter. Look, Touch, Listen, and Discover!

Sciencenter

Search | Support the Sciencenter: Become a Member!    Make a Gift!   

Sagan Planet Walk

The Sagan Planet Walk is a walking scale model of the solar system, extending 1.2 km from the center of The Commons in downtown Ithaca, NY, to the Sciencenter, a hands-on museum featuring over 250 exhibits.

The exhibition was created in memory of Ithaca resident and Cornell Professor Carl Sagan by the Sciencenter in 1997. Professor Sagan had been a founding member of the museum's advisory board and was instrumental in developing the institution's educational philosophy.

Free Audio Tour

Learn more about the Solar System and the planets as you explore the Sagan Planet Walk. The FREE tour is narrated by Bill Nye the Science Guy. Listen to the tour by phone at 703.637.6237. Download from iTunes or our Sagan Planet Walk Podcast Page.

Passport to the Solar System

Purchase a "Passport to the Solar System" for $4 and take your fully stamped passport to the Sciencenter to receive one free admission.

You can also download the "Passport to the Solar System" for free below. Please note that the downloadable passports do not qualify for free admission to the Sciencenter.

Map

Archive: Dedication and Press Releases

History, Biography & Addendums

Project Design Measurements

Scale factor = 5,000,000,000:1
OBJECT

Orbit Radius

(kilometers)

Object Diameter
(kilometers)

Scaled Orbit

Radius (meters)

Scaled Object Diameter

(millimeters)

Sun 0 1,392,000 0 278
Mercury 58,000,000 4,980 12 1.0
Venus 108,000,000 12,360 22 2.5
Earth 150,000,000 12,742 30 2.5
Mars 228,000,000 6,760 46 1.4
Jupiter 778,000,000 142,600 156 28.5
Saturn 1,430,000,000 120,600 286 24.1
Uranus 2,870,000,000 47,000 574 9.4
Neptune 4,490,000,000 44,600 898 8.9
Pluto 5,900,000,000 2,274 1,180 0.4
Doc Kinne created this portion of the web site in 2001 as part of his Graduate Projects in Astronomy at the Swinburne Center of Astrophysics and Supercomputing Melbourne, Australia.