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Click on the Northern Lights above to take you to the Squeak project described at the right.
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Be sure Squeak is installed successfully on your computer. It will take about 30 seconds for the project to load for a fast connection (up to 10 minutes for a slow modem connection). Wait until you see an orange flap at the lower left labeled Navigation. Click the flap to open and close it and access some neat tools. If you click Escape Browser, you will have more space. Click Browser Reentry to get back your Browser controls.
The challenge is for you to work collaboratively in teams to answer the question "Do Northern Lights exist on other planets?" Northern Lights have been
observed on other planets. Exploration tools in the Squeak project are waiting for you to
explore the other planets. Through comparison, you
should be able to determine which other planets
could have Northern Lights.
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