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<img src="http://www.uvm.edu/~uvmpr/images/features/pulsar_430x300.jpg" height="300" width="430" />And you thought the remote for your TV was tricky? Isabel Kloumann and Isaac Backus, both undergraduate students, sit in a cinderblock office on the fifth floor in the Cook Building entering coordinates into an iMac computer. One-thousand-eight-hundred-forty-seven miles away &#8212; in a limestone sinkhole on a mountaintop in Arecibo, Puerto Rico &#8212; the world's largest telescope moves to their commands.<span id="caption">Pulsars: some are 10 miles wide and heavier than the sun. Undergraduate researchers Isaac Backus and Isabel Kloumann are helping to draw a portrait of the "rotating carousel" of radio waves that shines forth from these strange stars. (Photo: Joshua Brown)</span>