Episode
How the Universe Works: Asteroids - Worlds That Never Were
Overview
Asteroids wiped out the dinosaurs and may be back for us but they also built the Earth and may have brought life to its barren surface. Asteroids will shape our future as much as our past and scientists are striving to unlock their secrets.
Details
- Series
- How the Universe Works
- Season
- Season 2
- Episode
- Episode 7
- Air date
- 2012-08-22
- Runtime
- 42 min
Episode context
Asteroids - Worlds That Never Were is Episode 7 in Season 2 of How the Universe Works. It aired on 2012-08-22. The runtime is 42 min.
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Episode 6: Comets - Frozen Wanderers
As time machines from the early universe, comets could hold the key to unlock the secrets of the cosmos, and may even be the origin of life itself. In this episode, we learn that comets are even more mysterious and fascinating than we had ever imagined.
Episode 8: Birth of the Earth
The Earth was formed by a series of cataclysms without which we would not exist. Could the same events have created other earth-like planets elsewhere in the Universe inhabited by creatures like us?
More episodes from this season
Episode 5: Extreme Orbits - Clockwork and Creation
We owe our existence to the stability of earth's orbit. But we are the freaks: everywhere else we look we find orbits are chaotic, unstable, and violent. Yet on the very largest scale, orbits are also a creative force, even constructing the fabric of the universe itself.
Episode 4: Megaflares - Cosmic Firestorms
The Universe is a magnetic minefield. Spinning star systems crackle and explode, magnetic monsters rip worlds apart, star-quakes shoot beams of devastating energy, and galactic flamethrowers fire gamma-rays half way across the Universe. Will we find Earth in the firing line?
Episode 3: Exoplanets - Planets from Hell
We once thought that the only planets were in our solar system. We have found many other planets but they are nothing like we expected, from deep-frozen, toxic snowballs, to scorched and boiling nightmares. Is every planet out there a planet fom Hell?
Episode 2: Megastorms - The Winds of Creation
Destructive weather forces are symptoms of Earth's creative energy. In our quest to discover if we are alone in the universe, we shouldn't just look for worlds, we should look for weather; find that megastorm, and maybe we will find alien life.
Episode 1: Volcanoes - The Furnaces of Life
Are we alone in the Universe? What makes Earth so different? Part of the answer is our volcanoes. without them we would not be here either. Today we are discovering volcanoes on alien worlds. Are these worlds where, tomorrow, we might find life?