All Subjects
      All Types

        Info

        Grades

        6-8

        Accessibility

        Caption

        Permitted Use

        Stream, Download and Share


        Part of WGBH
        3 Favorites
        54 Views

        Eclipse Over America | Predicting Eclipses

        Learn about the evolution of eclipse predictions, in this pair of videos from NOVA: Eclipse Over America. Ancient Babylonians were able to predict eclipses using a pattern deduced from prior observations. This cycle, now known as the Saros cycle, repeats about every 18 years and allowed Babylonian astronomers to predict eclipses to within about 4 hours, although they could not say where an eclipse would occur. Edmond Halley was the first person to accurately predict the time and path of a total solar eclipse using mathematics and Newton’s law of gravity. He successfully predicted the time and path of the 1715 total solar eclipse to within about 4 minutes and 20 miles.

        To view the Teaching Tips for this media gallery, go to Support Materials below. This resource was developed through WGBH’s Bringing the Universe to America’s Classrooms project, in collaboration with NASA.

        Visit the program page.

        Babylonians and the Saros Cycle

        Learn how ancient Babylonians were able to predict eclipses using a pattern deduced from prior observations, in this video from NOVA: Eclipse Over America.

        Permitted Use:

        Stream, Download and Share

        Accessibility:

        Caption

        Transcript:


        Download:

        × Close

        How Halley Predicted the 1715 Eclipse

        Learn how Edmond Halley used mathematics to predict the time and path of the 1715 total solar eclipse, in this video from NOVA: Eclipse Over America.

        Permitted Use:

        Stream, Download and Share

        Accessibility:

        Caption

        Transcript:


        Download:

        × Close

        Contributor:
        Funder:

        You must be logged in to use this feature

        Need an account?
        Register Now