The Fall Sky
Episode 8 of Our Night Sky

The Fall Sky
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Our Night Sky
For thousands of years, the star-filled sky has been a source of wonder, discovery, and entertainment. All you need to feel at home in its limitless expanse is Our Night Sky, a richly illustrated 12-episode course that gives you an unrivaled tour around the sky--all while teaching you about the…
Seeing and Navigating the Sky
Episode 2 of Our Night Sky
The naked eye is a powerful instrument: if you know how to use it. Learn the best times and conditions for observing, how to identify the positions and magnitudes of stars and planets, how the sky changes over the course of a night, how to use astronomical maps such as…
The Northern Sky and the North Celestial Pole
Episode 7 of Our Night Sky
Embarking on the second half of the course in which you systematically tour the entire sky, study two constellations that are continuously in view from the Northern Hemisphere: Ursa Major and Cassiopeia. Also explore the slowly shifting position of true north in the sky.
The Winter Sky
Episode 9 of Our Night Sky
Continuing your focus on the constellations of the Northern Hemisphere, survey the magnificent winter sky, dominated by Orion. Star hop around the region, which includes a wealth of interesting stars, globular clusters, nebulae, and other features, especially the Orion Nebula: the finest nebula in the northern sky: and the Pleiades…
The Spring Sky
Episode 10 of Our Night Sky
The spring sky opens the view into intergalactic space perpendicular to the plane of the Milky Way. Among the objects visible are the immensely rich galaxy clusters in Virgo and Coma Berenices, which are many millions of light-years distant and can be seen with small and moderate telescopes.
The Summer Sky
Episode 11 of Our Night Sky
Arching high overhead in the summer sky is the Milky Way, which is the plane of our galaxy seen from the inside. Tour this densely packed region of stars of all types, from dusty regions of star birth to the exquisite shells of dying stars. Here, a useful orienting feature…
The Southern Sky and the Milky Way
Episode 12 of Our Night Sky
In this final episode, travel to the Southern Hemisphere for sky views inaccessible from northern latitudes. Discover the famous Southern Cross, the Large and Small Magellanic Clouds, and a spectacular panorama of the Milky Way: along with new myths and stories that add a human dimension to our marvelous night…
Free Fall and Inertia
Review three great discoveries by the "grandfather" of gravity research, Galileo Galilei. His most famous experiment may never have happened, but his principle of inertia, law of free fall, and principle of relativity are the basis for everything that comes later in the science of gravity--including key breakthroughs by Einstein.
The Amazing World of Aviation
From Alpha to Zulu this series takes viewers back to the beginning of flight up through its entire history as an amazing growing industry up to modern-day plans to thrust commercial aviation travel into space. Produced by Switch International.
The Beginnings of Flight
Part of the Series: The Amazing World of Aviation
From the exhilarating and perilous days of early flight, to the present, where travel on commercial flights all over the world is as common as travel by motorcar, this program looks at the beginnings of flight, with innovators such as Benjamin Franklin and Leonardo DaVinci coming up with new ways…
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Part of the Series: The Amazing World of Aviation
The first decades of aviation brought both triumph and tragedy. To fly an early airplane required skill, courage and daring. A new breed of adventurers looked to the heavens for their challenges, and thrilled audiences around the world. The advent of the movie camera meant that their exploits could be…
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Part of the Series: The Amazing World of Aviation
The decades following the First World War saw aircraft designers pushing the boundaries of aeronautical technology, moving the industry forward at a rapid pace. With new commercial markets opening up, it was the visionaries who held the key to success. Each invention promising a future filled with endless possibilities. Airplane…