Episode

A Sky Full of Ghosts

by Ann Druyan, Steven Soter, Patrick Stewart, Jonathan Morgan Heit, Carl Sagan and 4 others

An exploration of how light, time and gravity combine to distort our perceptions of the universe. We eavesdrop on a series of walks along a beach on summer nights in the year 1809. William Herschel, whose many discoveries include the insight that telescop

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