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Galaxies & Cosmology

Everyday we're exposed to news of violent crime, kidnappings, carjackings, acts of terrorism, and natural disasters that fuel our sense of insecurity. Jason Hanson, former CIA officer, security specialist, and recent successful contestant of ABC’s reality show Shark Tank, will discuss how to act appropriately in any dangerous situation, including how to thwart kidnappings and carjackings, prevent home invasions, defend against would-be attackers, and pack a perfect emergency kit. Filling in for George, Dave Schrader (email) hosts.

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Galaxies & Cosmology

Show Archive
Date: Monday - April 9, 2012
Host: George Noory
Guests: Chris Impey, Craig R. Smith

Astronomy Professor Chris Impey discussed the structure of galaxies, exoplanets, the Big Bang, and various other topics in astronomy and cosmology. Regarding the size of the universe, "the current view in the expanding Big Bang picture is that the distance to the edge...as well as we can measure, is about 40 billion light years," he said. The universe in its earliest state consisted primarily of just two elements, hydrogen and helium, and it took a long time for heavier elements to develop, he continued. An earth-like planet could have developed 6-7 billion years ago, "but I don't think we could even imagine a life-form that is a billion years more advanced than us...we don't have the evolution ourselves to imagine it," he noted.

New discoveries of exoplanets are helping to expand our knowledge of the formation of solar systems, and two systems that were recently found have a similar number of planets to ours, Impey reported. Planets are the residue of star formation, happening at the outskirts, he detailed, while our moon, it's hypothesized, may have been formed when a Mars-type object collided with a primeval Earth (moon rocks tend to support this theory). The gas giants like Jupiter and Saturn are like mini-solar systems themselves with rings and moons that probably formed around the same time.

There are around 100 million Earth-like planets in just the Milky Way alone, he estimated, and if you multiply that by the number of galaxies-- 100 billion, you have a staggering number of possibilities for life. After about a trillion years, the universe will fade to black, but interestingly, Impey suggested that "a dark universe doesn't have to be a dead universe." An intelligent species doesn't need to get their energy from starlight, but instead could tap gravitational energy, he surmised.

Economic Analysis

First hour guest, finance expert Craig Smith gave an overview of the troubled economy, and predicted that the U.S. is headed for a "currency collapse." In such a scenario, currency has little or no value, and hyper-inflation occurs. One way we might avoid this, he suggested, is to put pressure on politicians to pass a balanced budget, as well as consider getting back on the gold standard. "I believe the world is hungry for an honest money system," he added.

News segment guests: Mitch Battros, Joyce Riley

Bumper Music

Bumper music from Monday April 09, 2012

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