Imagine the Universe!
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You got one of your calculations right, but one was off. You have the right idea, though, and are getting the hang of calculating an everyday object's angular size. Try checking your calculations and trying again.

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Experiment Click here to return to the beginning and try a different experiment.

Imagine the Universe is a service of the High Energy Astrophysics Science Archive Research Center (HEASARC), Dr. Nicholas White (Director), within the Laboratory for High Energy Astrophysics at NASA's Goddard Space Flight Center.

The Imagine Team
Project Leader: Dr. Jim Lochner
All material on this site has been created and updated between 1997-2004.

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