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00:27:26
The Mars Phoenix Lander will have been collecting data and sending it back to earth for a month! Exploratorium Senior Scientist Paul Doherty will examine the data and tell us what new information we've gained about Mars. We'll also get an update on our old friends, the Mars rovers Spirit and Opportunity!

00:30:36
Join us as we celebrate the beginning of summer in the Arctic and the long, cold winter in Antarctica. We'll connect live to two polar field sites: Summit Camp atop Greenland's vast ice sheet, where the sun will be shining 24 hours a day, and the South Pole Research Station, now in the middle of 6 months of darkness.

00:28:34
Learn more about the new mission to Mars! The Mars Phoenix Lander touched down on the Red Planet on Sunday, May 25, 2008, and began collecting data. Phoenix is designed to study the history of water and search for complex organic molecules in the Martian arctic's ice-rich soil. Join Exploratorium Senior Scientist Paul Doherty as he walks us through the mission and shows us the first pictures that the Phoenix Lander sends back!

00:00:40
An introduction to the stripped-down motor, a simple and easy-to-make version of the electric motors found in toys, tools, and appliances.

00:01:16
A detailed description of the simple materials needed to make a stripped-down motor.

00:02:48
A step-by-step demonstration of how to make the stand for the stripped-down motor.

00:05:16
A step-by-step demonstration of how to make the coil for the stripped-down motor.

00:01:41
How the stripped-down motor works, including a discussion of how electricity and magnetism combine to drive the machine.

00:01:26
Troubleshooting tips for making sure your stripped-down motor works well.

00:01:29
A more detailed explanation of how the stripped-down motor works.