Asteroids and comets and their effects, both good and bad, are examined. Included: their function in the formation of our solar system; their possible role in the extinction of dinosaurs; and theories that comet dust carries deadly viruses.
The fifth-season opener explores seven wonders of Earth's solar system. Included: Enceladus, a moon of Saturn; one of Saturn's rings; Jupiter's Great Red Spot; the asteroid belt; the Olympus Mons volcano on Mars; the surface of the sun; and Earth.
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- Premiered: May 29, 2007
- Rating: TV-PG
- Premise: An astronomy series examing the history, scientific phenomena and mysteries of the universe. (more)