1. Radio
 / Modified may 1, 2010 2:25 a.m.

400 YEARS OF THE TELESCOPE

Take a visually stunning journey from Galileo’s first look at the cosmos in 1609, to today’s quests to discover new worlds. Tuesday, April 13th at 9:00 p.m. on PBS-HD. by Colleen Greer

From reenactments of Galileo’s invention and early pen drawings of the moons of Jupiter, to vividmulti-colored nebulas captured by the Hubble Space Telescope, 400 Years of the Telescope takes viewers into the wonders of space exploration.

![400 yrs_telescp_kitt][400 yrs_telescp_kitt]

Kitt Peak

The planet’s top astrophysicists discuss momentous discoveries, and define dark energy – a mysterious vacuum energy that is accelerating the expansion of the universe.

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