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2) Telescopes
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Explores the construction and history of telescopes. Uses color photographs to showcase different telescopes from around the world and their uses.
3) Telescopes
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Simple text and color photographs define what a telescope is and its function. Discusses specific telescopes and what they have discovered. Includes a list of facts, an index, a glossary, and online resources.
4) Telescopes
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Introduces the function, parts, and uses of telescopes, and provides instructions for two activities that demonstrate how a telescope works.
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Since the time of Stonehenge, now thought to be a possible lunar observatory, up until today's age of highly sophisticated telescopes, man has developed technology to assist in exploring the skies. Modern Marvels traces the history of the technology behind mankind's stargazing.
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The telescopes of tomorrow will see in infrared and ultraviolet. They will peer through space and scan across time. They will allow us to find new supernovae, spot potentially hazardous asteroids, better understand dark energy and peer into the earliest moments of space time.
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The Kepler mission has determined that terrestrial planets are extremely common, and may orbit most stars in the Milky Way. But these planets are difficult to directly image because they're dense and small. Our Sun is about ten billion times brighter than Earth. Train a distant telescope on us, and it will be overwhelmed by the Sun's rays. So how can we find terrestrial planets around stars light
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Consider the problem of gleaning information from the severely limited number of optical photons originating from astronomical sources. Our eyes can only do it so well, and telescopes have several major advantages: increased light-gathering power, greater sensitivity of telescopic cameras and sensors such as charge-coupled devices (CCDs), and enhanced angular and spectral resolution.
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This year marks the 400th anniversary of Galileo's use of the first telescope. On this week's show, we reflect on how telescopes have changed our perception of our place in the universe, how small we are in size, space and time. Our guests include Dava Sobel, author of The Planets, Vatican Astronomer Father Chris Corbally, and astronaut Paul Richards. We also discuss how they help astronomers discover new and interesting aspects of the universe, from...
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Astronauts need more than observatories to search deep space, they also use balloons the size of football fields. In this video segment, see how, even with an international crew of astrophysicists and engineers, launching a balloon loaded with expensive x-ray and gamma ray telescopes is a risky job.