|Date:||Monday - November 15, 2010|
|Guests:||J. Richard Gott, Michael S. Roberts, Douglas Hagmann|
Professor of astrophysics at Princeton University, J. Richard Gott spoke about his studies of cosmology, his work with the physics of time travel, and the need for space colonization. Working on the Sloan Survey of the universe, his measurement of what came to be called the Sloan Great Wall was listed in the Guinness World Records as the largest structure in the universe. The structure is a chain or filament that connects various galaxy clusters together, running some 1.37 billion light years across, he detailed.
We know from looking at the dinosaurs, there are definite extinction events that can wipe out entire species-- so we need to have some "lifeboats," for the human race, he said. "The goal of the space program...should be to increase our survival prospects by colonizing space, as a life insurance policy against anything bad that might happen on Earth," he continued. We should plant a colony on Mars, while the space program is intact, he urged.
Based on Einstein's theory of relativity, time travel to the future is known to be possible and people are doing it in a small way today, Gott pointed out. In the future, if someone could take a spaceship at near the speed of light to a destination 500 light years away, when they returned to Earth, 1,000 years would have passed, but because they were traveling so fast, it would have only been 10 years for them. A small example of this effect can be seen with astronaut Sergei Krikalev, who by virtue of his many space flights, has aged 1/48th of a second less than he would have if he'd stayed on the Earth.
Airport Body Scanners
First hour guest, security expert Douglas Hagmann talked about the TSA's new whole-body security scan, which has been drawing increased complaints. "Instead of treating every passenger as a potential terrorist," we should use profiling and then select those individuals to undergo the increased security checks, he commented. Pilot Michael Roberts, who recently refused both the body scan and physical frisking, also joined the discussion.
Astronomers believe that a star that exploded into a supernova (SN 1979C in the photo) is in the process of becoming a black hole, making it the youngest black hole yet observed. More here.
Bumper music from Monday November 15, 2010
- Midnight Express (The Chase)
- I'm Telling You Now
Freddie and the Dreamers
Frankie Valli & Four Seasons
- Right Now
- Eve of Destruction
- Flying Condor
- I Started a Joke
- 2112 Overture
- Across the Universe
- Big Log
- Break On Through (To The Other Side)
Allman Brothers Band
- Something in the Air
- Samba Pa Ti
- Saved by Zero
- Inca Dance