Season 4
(2009)
Episodes
Death Stars 0.0
August 18, 2009
Season 4 opens with an exploration of dying stars, the process where stars become supernovas, and, occasionally, become…
The Day the Moon Was Gone 0.0
August 25, 2009
Without the moon, Earth would be a very different and desolate place today--four hours of sunlight with pitch-black nig…
It Fell From Space 0.0
September 1, 2009
Every year, thousands of objects both natural and manmade plummet through our atmosphere and crash into the Earth. Thes…
Biggest Blasts 0.0
September 8, 2009
An examination of the most powerful explosions and blasts in the universe. Includes a look at the Mexico's Yucatán peni…
The Hunt for Ringed Planets 0.0
September 15, 2009
They are breathtaking, lethal and a constant source of surprise. The stunning rings of Saturn have mesmerized countless…
10 Ways to Destroy the Earth 0.0
September 22, 2009
Experts cook up ways you could destroy the Earth, including swallowing it with a black hole, blowing it up with anti-ma…
The Search for Cosmic Clusters 0.0
September 29, 2009
They are the one-stop-shopping places for learning all about the nature and variety of stars in the Universe. They're u…
Space Wars 0.0
October 6, 2009
Outer space is already an essential part of America's ability to fight wars. Our military depends on satellites for man…
Liquid Universe 0.0
October 20, 2009
On alien planets, they rain from the sky as scalding iron. On distant moons, even at hundreds of degrees below zero, th…
Pulsars & Quasars 0.0
October 27, 2009
They sort of sound like the same phenomenon, but Pulsars and Quasars are very different. Pulsars are tiny--only a few m…
Science Fiction, Science Fact 0.0
November 3, 2009
Warp speed, transporters, wormholes and lasers--they are all staples of science fiction books, movies, and TV shows. Bu…
Extreme Energy 0.0
November 10, 2009
Ours is a universe of energy, from powerful jets ejected from black holes to the raw nuclear fury of our Sun. But, the …