Informações:
Sinopsis
Leading science journalists provide a daily minute commentary on some of the most interesting developments in the world of astronomy and space exploration. For a full-length, weekly podcast you can subscribe to Science Talk: The Podcast of Scientific American . To view all of our archived podcasts please go to www.scientificamerican.com/podcast
Episodios
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Following Flare-Ups, Star Finally Explodes
14/01/2013 Duración: 01minAfter a few false alarms, the star SN 2009ip appears to have gone supernova at last. John Matson reports
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Mars Flight Habitat Volunteers Lost Sleep and Fitness
07/01/2013 Duración: 01minSix volunteers spent 520 days in a simulation of a trip to Mars, and wound up experiencing sleep disturbances and becoming more sedentary. John Matson reports
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Civilian Spacefarers Face Medical Hurdles
03/01/2013 Duración: 01minOpening the door to the paying public means that less healthy individuals will soon have access to space--if their doctors approve. John Matson reports
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Titan Sports Hydrocarbon Nile
17/12/2012 Duración: 01minThe Cassini orbiter spotted a river system on Titan that NASA likens to a miniature version of the Nile River, but flowing with liquid ethane and methane. John Matson reports
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Should Mars Get Another Rover?
10/12/2012 Duración: 01minNASA has plans for another Mars rover, but no trips scheduled for exotic places like Titan or Europa. John Matson reports
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3-D Printer Makes Structures with Lunar-Like Material
04/12/2012 Duración: 01minA proof-of-concept 3-D printing job using lunarlike material shows that quick-and-dirty tools or spare parts could be manufactured on the moon. John Matson reports
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Thicker Atmosphere Still Would Have Left Mars Cold
28/11/2012 Duración: 01minGlobal 3-D climate simulations for plausible Martian atmospheres show that even with a much thicker CO2 layer, the greenhouse effect could not have warmed Mars above freezing. John Matson reports.
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Galaxy Might Be Most Distant Seen Object
20/11/2012 Duración: 01minThanks to gravitational lensing by a cluster of galaxies, the light emitted by a small galaxy 13.3 billion years ago has reached Earth. John Matson reports
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Star's Habitable Zone Includes Possible Giant Earth
13/11/2012 Duración: 01minA planet at least seven times as massive as Earth orbits comfortably in the habitable zone of the star HD 40307. John Matson reports
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New Analyses Resurrect Contested Exoplanet Claim
06/11/2012 Duración: 01minFomalhaut b looked like an exoplanet to some astronomers and like dust to others. But new analyses strengthen the planet view. John Matson reports
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Solar Wind Creates Traces of Lunar Surface Water
23/10/2012 Duración: 01minA chemical analysis of lunar samples now points to the solar wind being behind the ultrathin dusting of water molecules first detected in 2009 from spacecraft measurements. John Matson reports
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Sensor Info Reveals Titan Probe Landing
15/10/2012 Duración: 01minAn analysis of the Huygens probe's sensor data has reconstructed bouncing and skidding, moments before it came to rest on Titan. John Matson reports
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Zippy Star Promises to Be Relativity Laboratory
05/10/2012 Duración: 01minA star orbiting the galactic center's black hole in just 11.5 Earth years should provide data for studying how gravity works near an extremely massive object. John Matson reports
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Good Things Come from Small Scopes
01/10/2012 Duración: 01minSmaller ground-based telescopes produce research results that get more citations per dollar spent than the big guys. John Matson reports
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Pre-Life Chemistry Happens at Space Temperatures
24/09/2012 Duración: 01minUV light, which radiates from stars and galaxies, can induce rapid changes in icy hydrocarbon molecules cooled to 5 kelvins, as on a comet. John Matson reports
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White Dwarf Binary Stars Make Merger Plans
17/09/2012 Duración: 01minIn the J0651 binary system two white dwarf stars orbit each other in less than 13 minutes--and it's getting a little faster all the time. John Matson reports
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Dawn Spacecraft Sets Sail for Dwarf Planet Ceres
11/09/2012 Duración: 01minOn September 5th NASA's Dawn spacecraft left the asteroid Vesta and set sail for the dwarf planet Ceres, where it will arrive in 2015. John Matson reports
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NASA Spacecraft's Census Tallies Millions of Black Holes
04/09/2012 Duración: 01minNASA's infrared WISE spacecraft found about 130 glowing black holes in a small region of space, meaning that at least two million active black holes dot the sky. John Matson reports
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Milky Way and Satellite Galaxies Are Rare Arrangement
28/08/2012 Duración: 01minOnly about 0.5 percent of Milky Way-like galaxies have companions like our satellite galaxies, the Magellanic Clouds. John Matson reports
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Probes Will Live in Van Allen Belts
20/08/2012 Duración: 01minThe twin Radiation Belt Storm Probes will fly through the Van Allen Belts for two years, measuring charged particles, plasma waves and magnetic fields. John Matson reports