Informações:
Sinopse
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
Episódios
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Bacteria Got an Early Fix on Nitrogen
23/02/2015 Duração: 02minNew evidence points to the evolution of the ability for bacteria to grab nitrogen from the atmosphere some 3.2 billion years ago, about 1.2 billion years earlier than thought—with implications for finding extraterrestrial life. Lee Billings reports
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Stars Reveal Hidden Galaxy
17/02/2015 Duração: 01minA dwarf galaxy near the Milky Way may consist of more dark matter than regular matter.* Clara Moskowitz reports
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Space Science Budget Gets Small Lift
10/02/2015 Duração: 01minNASA has to deal with the unexpected financial consequences of robotic missions that just keep going. Lee Billings reports
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5 Rocky Planets Found in Ancient, Distant Solar System
02/02/2015 Duração: 01minThe oldest group of terrestrial worlds now known formed some 11.2 billion years ago, more than six billion years before our sun and planets. Clara Moskowitz reports
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Long-Lost Lander Found on Mars
26/01/2015 Duração: 01minNew images from a NASA orbiter reveal Beagle 2’s final resting place. Lee Billings reports
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Look Up to See Latest Comet Lovejoy
15/01/2015 Duração: 01minAustralian amateur astronomer Terry Lovejoy’s latest comet find is naked-eye visible in the southeast sky until January 24. Clara Moskowitz reports
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SpaceX Will Try Launch, Then Soft-Land Returning Booster
31/12/2014 Duração: 01minThe company hopes to send up a Falcon 9 rocket and then safely land the discarded first stage for reuse. Lee Billings reports
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Humans on Mars Soonish Says NASA Bigwig
10/12/2014 Duração: 01minJohn Grunsfeld, the former astronaut who now heads NASA’s Science Mission Directorate, thinks that traveling light could get people to Mars by the 2040s
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UV Light Colors Great Red Spot
01/12/2014 Duração: 01minJupiter's Great Red Spot is its particular crimson shade because of the interaction of ultraviolet light and specific chemical compounds in the gas giant's atmosphere. Lee Billings reports
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It’s Hard to Dust in Space
20/11/2014 Duração: 01minOver the summer researchers identified seven specks of dust returned to Earth by the Stardust spacecraft. But determining their true origin has been difficult. Clara Moskowitz reports
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Comet Reeks of Cat Crap and Rotten Eggs
03/11/2014 Duração: 01minThe Rosetta spacecraft has unexpectedly detected hydrogen sulphide and ammonia coming from Comet Churyumov-Gerasimenko. Lee Billings reports
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Track Cosmic Rays with Smartphone App
16/10/2014 Duração: 01minTake part in a citizen-science project by helping researchers track high-energy cosmic rays via a network of smartphone users. Clara Moskowitz reports
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Star-Forming Clouds May Spit Out Life’s Building Blocks
09/10/2014 Duração: 01minAstronomers have discovered one of the largest and most complex organic molecules yet in a gaseous star-forming region of interstellar space. Clara Moskowitz reports
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Dark Matter Looks WIMPy
24/09/2014 Duração: 01minData from the International Space Station-based Alpha Magnetic Spectrometer experiment supports the idea that dark matter consists of the invisible particles called weakly interacting massive particles, or WIMPs. Clara Moskowitz reports
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Forensic Astronomer Dates Monet Vision
11/09/2014 Duração: 01minTexas State University astronomer Donald Olson combined solar, tidal and weather data to identify the likely moment of the image in the Monet work Impression, Sunrise
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Milky Way's Home Supercluster Found
03/09/2014 Duração: 01minAstronomers have identified the Milky Way’s cosmic address—inside the supercluster Laniakea, which means “immense heaven” in Hawaiian. Clara Moskowitz reports
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Neptune Visit Hits 25th Anniversary
24/08/2014 Duração: 01minOn August 24th, 1989, the Voyager 2 spacecraft rendezvoused with Neptune, making it the farthest planet to pose for a close-up, a record it still holds today.
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Air Pollution Could Reveal ET's Home
13/08/2014 Duração: 01minIf intelligent aliens are dumb enough to pollute their atmosphere, NASA’s upcoming James Webb Space Telescope is powerful enough to spot some of the signs on some exoplanets. Clara Moskowitz reports
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Martian Soil Salts May Make Water Ice All Wet
25/07/2014 Duração: 01minWithin a Mars-like laboratory environment, perchlorate salts known to exist on Mars were able to lower the freezing point enough to get ice to turn to liquid water. Clara Moskowitz reports
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Saturn Probe Ready for Its "Grand Finale"
09/07/2014 Duração: 01minThe Cassini probe readies for its final act with new flight patterns that will get unprecedented views of Saturn and culminate in a final dive into the planet's atmosphere. Clara Moskowitz reports