families Smithsonian Education
IdeaLabs: Sizing Up the Universe
Getting Started

If the Earth is the size of a Brussels sprout, how big is the Sun? If the solar system is the size of a fried egg, how big is our galaxy? In this interactive challenge, you can guess relative sizes in outer space, and then do the math to check your guesses.

You can also see relative distances by using an online map. If the Brussels sprout Earth is in your backyard, how far away is the shrunk-down Sun? Type in your own address to find out!
(IdeaLab credits)
Required Plugins for this Lab
This Idea Lab requires the use of the following plugin(s) for your browser.
Macromedia Flash Player


Smithsonian Institution

Websites A-Z


Smithsonian Center for Learning and Digital Access ©2013 Smithsonian Institution About UsContactSite MapTerms of UsePrivacy PolicySubscribe