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        NOVA: Finding Life Beyond Earth | Comets Bombard the Early Earth

        In this video segment adapted from NOVA, learn how key ingredients for life may have been delivered throughout the solar system by comets and asteroids billions of years ago. Watch video that features real satellite imagery as well as simulations to explore a dynamic model of solar system evolution. Learn how the gravitational interactions of Jupiter and Saturn could have destabilized the early solar system, leading to a 100-million-year period, known as the Late Heavy Bombardment, in which comets and asteroids were scattered throughout the solar system and collided with other objects (including the early Earth). Impact craters visible on moons and planets may be evidence of this period.

        This video is available in both English and Spanish audio, along with corresponding closed captions.

        Visit the program page here.

        Also Available in English | Spanish


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