Our spacecraft have visited rocky asteroids and icy comets to collect invaluable data about the origin of the Solar System. And the orbits of Kuiper Belt Objects—tiny worlds far from the Sun—reveal that our planetary system had a terrifically violent past, when giant planets changed their orbits, wreaking gravitational havoc. Visualizations from the Academy’s award-winning planetarium show Incoming! tell the story of this ancient interplanetary transformation.

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Jake Simon's model of planetesimal formation, from Incoming!
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Simulation of incoming asteroid
Incoming!
Witness the explosive origins of Earth in this hard-hitting planetarium show narrated by George Takei.
Incoming!
Incoming!
Asteroids and comets have collided with our planet throughout its history, changing the course of life on Ear
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Chelyabinsk meteor Image Credit: California Academy of Sciences Visualization StudioChelyabinsk. Image
Incoming!
Get up close with asteroids and comets in our newest planetarium show.

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